I wonder who you're quoting this time. Anyway, I see that you are trying a new gambit of suggesting that we are only pretending not to believe in spirits.
I looked for the quote in vain. However, it's a fairly standard straw-man screed we've seen elsewhere in fringe arguments, and which appears all over religious philosophy. If someone is skeptical of a particular claim—even with good reason—its believers will sometimes shove the rebuttal all the way along the spectrum until it reaches some absurd end that they can then rail against. No, skeptics are not nihilists. Specifically, rejection of someone's particular pet idea doesn't warrant tarring them with a rejection of morality, humanity, knowledge, or meaning. It just means that one idea lacks sufficient substance.
Similarly these kinds of arguments always seem to tip a hand. In motte-and-bailey fashion, the claimant starts with the argument that belief in, say, spirits is the product of more careful study, better intuition and insight, or pure class superiority. ("You need to be a special kind of person to understand the spirit realm.") But occasionally—as here—the hint is revealed suggesting the real justification is fear of a great beyond that doesn't involve their consciousness persisting forever. Wrongly assuming this is a universal fear, they project their fearfulness onto others. Or as you put it :—
This seems to suggest you have difficulty in conceiving that people can sincerely hold different beliefs to your own. Is that really so hard for you?
More specifically, I think, is the prospect that other people can
comfortably hold beliefs that differ from theirs. In the great rush to maintain the illusion of greater insight or erudition, preachers want to pretend we're all wallowing in existential dread and arrogantly refuse to lean upon the same crutch they need. In the similar vein of atheism, religious people ask atheists what they put on their "God shelf" instead of, say, the Christian God. They don't seem to fathom the concept that we don't have, need, or want a "God shelf."
Do I really need to point out that there is a vast difference between "a degree of uncertainty" and accepting a pile of made up nonsense?
Apparently, depressingly, I do.
Indeed, it's just another straw man. Skeptics don't argue that everything can or must be understood through "current scientific frameworks." And skeptics are fully comfortable with uncertainty. In fact, we embrace it more readily than believers in things. Skeptics are fully happy saying, "There's not enough evidence to draw a conclusion on this point." But the problem is that spiritism is one of those things that
can be empirically tested. It just fails the tests over and over again, with the claimants hastily revising their hypotheses to speculate around the failure.
And as I've mentioned before, advocates of spiritism seem to have no problem understanding that they are making testable claims and have themselves tried very hard to shoehorn that advocacy into what they aim to be proper scientific methods. By that I mean they seem to think empiricism is a perfectly reasonable expectation. Only when it fails do you get the safety-net revision that spiritism is opaque to science.
The presumption that spirits as defined in spiritism do not exist remains a presumption, and a fully reasonable one. But it's still just the presumption, the null hypothesis. If we arrive at such a time that testable evidence overturns it, skeptics will change their minds. (And science will leap into action, because it would open up vast new avenues of research in neuroscience and other fields.) But more importantly, the sheer dishonesty we see from people trying to establish spiritism via pseudoscience provides adequate explanation for why the belief persists. It's not that skeptics are irrationally or radically skeptical. Instead it's that there's a whole lot of smelly stuff out there masquerading as empirical evidence because people just really, really want to believe in it. So bollocks to the, "We're so enlightened!" argument. They're just scared.