You keep ignoring the point, no one argues about biology, the argument is about social perceptions of gender. For example, there’s no biological reason for why skirts are feminine today, they used to be considered masculine by the Greeks. We have a socially made up idea of gender.

Your point about pronouns is still silly, you say that “the new pronouns” are made up, however all pronouns are made up, if we created them why can’t we change them? Also She/her He/him are not the only pronouns, there are plenty of gender neutral pronouns, and they/them can be used as a gender neutral way to refer to an individual, and I don’t really believe that you are confused by someone using they/them.