The bottom line is that there’s no reason not to politely ask if someone can trade seats with you. Regardless why you ask. You want an aisle seat. You need to be closer to the bathroom. You and your spouse or children were assigned seats apart from each other. Or because of religious sensitivities. And if anyone doesn’t like that, well, that’s no one else’s problem.
It’s telling that most of the folks opposed to religious accommodation have no objection to a polite seat change request for a non-religious need or preference.
Again, these requests are being made politely. And no one is being coerced to agree to change.