I don’t see what you mean. It really isn’t considered civil to let men use the female restroom when a male restroom is available outside of circumstances like taking one’s young children to the restroom. If one sees a trans woman as a man, it is uncivil for “him” to parade at being a woman.

It is also super normal for couples to roleplay being couples, gay or not. What do you call civil here, to let a (in the mind of an Anti-homosexual conservative) illegitimate couple pretend as if it’s on the level of a legitimate one? Or it’s maybe uncivil for the illegitimate gay guy to come in and force the rest of the group to sit in discomfort with his sexuality?

In my opinion “maintain civility” is equally as fraught as “no politics” because different people have radically different opinions of what these mean. Often times when it comes to “identity politics” it’s mutually exclusive.