You can examine the idea, true, but as soon as you say - there's no evidence of such directed mutation (which is of course true). However the (lame) riposte to that is that an omniscient designer who is trying to preserve the value of faith (by hiding incontrovertible evidence of their existence) would have anticipated current scientific knowledge, so kept such directed mutations at a level below which they could be detected. Say by having lots of deleterious mutations as well.
The level of claimed activity is such that it is not really examinable.
OK, but that's really well within all that I have said. Except just to clarify something on that last highlighted sentence -
- if the activity of a God changes anything at all in what we detect/observe as a material reality all around us, then how can you say that it would be impossible ever to examine that for evidence of the Godly activity/influence? How could you prove that it could never be detected?? ...
... the point is that we cannot (as far as science now understands) ever prove any such thing! Ie., in case that's not clear - you cannot "prove" that the influence is undetectable ...
... you might try to make the interference so minimal that we cannot expect to detect it right now in 2022 ... but that is nowhere near being a proof that it would always be undetectable by any possible means in any future!
The simple way out of all of that, which I've tried to explain many times now in this thread, is to note that we have absolutely no need to demand any proof (where any "proof" is apparently impossible anyway, for anything!) ... it's more than sufficient to simply do what science actually does, and to gather all known relevant evidence, and to draw our conclusions from that ...
... that's also why science has pioneered peer-review in genuine published research journals. That is - if anyone claims that the science might be wrong (eg established theories such as evolution), then the claim only becomes valid if & when they can publish their own research showing why the published science is wrong (otherwise, if they cannot publish their objection in a genuine credible science research journal, then they have no credible case against the established science ....eg;- if someone claims their might be the hand of God directing evolution, then they need to publish their evidence for that in a real science journal, otherwise they have no case).