That, and to prevent it from being presumed all male. That is, without calling out pronouns, people will either default to "he/him" (which presumes everyone is

That, and to prevent it from being presumed all male. That is, without calling out pronouns, people will either default to "he/him" (which presumes everyone is male), or "they/them". If you don't want to identify a gender, "they/them" doesn't. But it normalizes calling out pronouns such that someone can say "I am a woman and would like to be called as such" without sticking out. That's really the intention; by making it so everyone, even those who legitimately don't care how they're identified (which is a smaller number than those who are fine being 'defaulted' to 'he/him' or 'they/them'; most who don't want to call out a pronoun will object to being referred to as 'she/her') define a pronoun, it normalizes it for those to whom it is important. And it doesn't de-anonymize anything; "they/them" is an option, as is asking "please don't use pronouns when referring solely to me; use my username").