You’ve used an accurate word with “truths,” at least as far as the Christian and Muslim religions go. If a person believes what they’re doing/practicing is propogating or based in real, objective truth, of course they’re going to continue and appreciate it. I just wrote a piece about the fact that this shouldn’t surprise anybody.
And even more, if the beliefs or practices they preserve are actually ancient truths — remembering that truth is objective and timeless — then we should appreciate it too, and join in!
So then, whether a worldview is true and its practices rooted in truth ought to be our most important question.