I think this is not against the rules, so I'll link a related thread here: https://toyhou.se/~forums/11.general-off-topic/254185.please-use-warnings-properly
Users frequently add block lists, dni lists, how one can talk to them, etc., - in short, everything besides content warning in content warnings. I think this is an issue since some users turn off warnings completely for finding its useless, potentionally putting themselves in danger of seeing triggering or unpleasant content. This is also obviously very tasking for people who use text-to-speech apps to go through a lot of text to find a content warning, and it's not respectful for the same reason towards anybody: the actual content warnings can be simply lost in the text and overlooked.
I suggest limiting the content warning customization. I think it may be presented as a list that includes trigger warnings and warnings regarding interactions with one's characters.