There are multiple takes on this, ranging from “tea bagging is fine” to “tea bagging is sexual assault” - see https://gamerant.com/teabagging-sexual-assault-controversy-explained/ for a rundown. I fail to see how allowing people to opt out of it would destroy any form of culture.
TBH I think seeing it as not at all rude makes you the exception. It’s clearly intended to be rude, to put your opponent on tilt, and most gamers get that.