Any definition of "approprite" is going to be in the context of some set of moral beliefs. Why should we treat religious ones differently than secular ones? For

Any definition of "approprite" is going to be in the context of some set of moral beliefs. Why should we treat religious ones differently than secular ones? For example, there's a secular set of beliefs held by all the righteous Twitter users that have had massive effects on what books are in school libraries or that we're even allowed to buy, why should that be any more acceptable because they're secular in nature? I know that the people pushing those beliefs consider them the one true, correct set of moral beliefs that every right-thinking person should hold - so much so thatt they reject the idea of naming them, because that would suggest there could be other correct beliefs. That's not very convincing to anyone who doesn't already share their beliefs though (especially given how often and quickly they shift).