I agree we are at an impasse, and should leave it here.
As far as I'm concerned, it is self-evident that believing truth is intrinsically better than believing a false statement. Indeed, unless each of us accepts that claim, I honestly don't know what the point of argument is.
But, if you insist that you see no reason to prefer truth to falsity, all things being equal, then I guess I must accept your claim.
OK, I think you have said the highlighted several times now in different posts, so if you going to claim that I have ever said that, then please quote where I ever said any such thing.
Please quote where I ever said "I see no reason to prefer truth to falsity".
Look - you are talking here about hypothetical individuals who exhibit something you call morality, and you say their morality is an "objective" thing. That means something that physically exists in the cells that comprise the persons body. And further you say it's beyond the remit of science to investigate that. And now you talk about such people "preferring to believe truth rather than falsity" ... how do you know what any of these hypothetical individuals believe about any of the things that you yourself would regard as moral behaviour? How do these people know what the truth of any situation is?
Different people believe all sorts of things for all sorts of reasons, ranging from the most absurd, misguided, idiotic and uneducated reasons, to reasons that are very well founded and supported by the majority of the relevant evidence. So the people you are talking about, i.e. the public in general (everyone and anyone), might very easily believe all manner of different things about any particular act that you yourself would call moral. They might not agree with you that all those things were morally correct behaviour, or they might agree at one stage in their life but disagree at a later date (or an earlier date). They might say about any of their past actions, that they now wish they had done something in the past that was more compassionate or more moral, they may regret previous actions or inactions. Or on the contrary, they may say that they now regret having made what they think were moral gestures, and now think they should not have acted with such compassion or such moral help in all sorts of situations ... and there may be any number of reasons why their opinions change about any such "moral" ideas like that ... because they are only personal beliefs which can change at any time ... they are not dependent upon absolute "truths" or certain "falsity" known to any of those people ... what they may regard as "truth" or "falsity" at any particular time, may change to the exact opposite at another time. Because those are all highly subjective views held by most of those people.
Some of those people may have far less subjective beliefs, and may instead try to use more rational evidence-based beliefs for many of those situations. But that actually means, by definition, more scientifically based decisions.
If you think that way, in that more object evidenced-based scientific view of the world, then you are less likely to regard most of those situations as requiring moral behaviour, but more likely just to regard that as something you prefer to do because you prefer to be helpful or compassionate to those around you who you regard as needing your help and compassion. The word "morals" does not necessarily come into it at all. It's just a preference for acting towards others in the way that you would like them to act towards you. And I think we all know that there are probably very obvious evolutionary reasons for why most of us would decide to behave in that way ... e.g., because in the longer term it's better for your own self-preservation and your own success in life, if you act towards others in that helpful, friendly compassionate way.
I'm not saying the entire explanation comes from ancient ancestral evolution. Much of it obviously comes from social interaction and the necessity to live in harmony and safety amongst the people directly around you. So that is simply learnt behaviour within the individuals own lifetime ... that's a sensible way to live your life if you want to avoid damaging conflicts with everyone around you.
The word "moral" is just a convenient lable for a whole mass of various actions like that. Some of which actions will be shown by some people, but not by others. Each individual will show some of the preferences and do some of those things, but they will take a personal subjective decision not to do some of those things which others might claim as moral in any particular situation. It's entirely subjective ... they are not all compelled by some human cell structure which forces them all to exhibit exactly the same moral actions in the same situations.
But this is now approaching the more religious view of morality, such as that expressed by WLC, whereby theists often claim to be far more moral than atheists, and almost always claim that without religious belief, humans would have no morals and just run a riot of self-interested barbarity. That of course is uneducated nonsense and fails to understand what I have just explained about evolutionary origins and self preservation, as well self preservation in immediate (non-evolutionary) every-day social circumstances. We act in those compassionate and helpful ways because it's better for us as well as better for those we are trying to help.
But none of that is objective in any sense of a physical group of cells that force us to behave in any particular way. Instead it's quite obviously learnt behaviour (which is good for us, for all the reasons explained above).
And you can certainly test all of that scientifically, if any real scientists want to waste their time on that. Eg., you could very easily just ask individuals a series of in-depth questions that lead to the heart/core of the reasons for why they take any so-called "moral" actions. You will inevitably find that the answer is that they think their actions are better for themselves as well as a benefit to the people they help ... it's simply a matter of expediency of self-interest ... it's a way of trying to ensure that you can live safely and happily amongst any immediate social group. And you can study that very easily indeed by science.