I've been curious at this phenomenon where English-speakers define themselves (err, ourselves, I guess) with which gendered third-person pronouns we prefer. Like, putting he/him, she/her, etc etc in our bios. Like, yes, it's a way to sidestep the question of whether we're "male" or "female" or nonbinary, but I just think it's funny that we sidestep that by going to third-person pronoun.
He, she, they. The obvious answer is because third-person pronouns in English is the only pronoun that's gendered. It's the only part of speech where gender is always visible. By comparison, in my other native language, Indonesian, has no gendered pronouns. Instead, we have different variations depending on levels of politeness and closeness and influenced further by the regional speech and how we see ourselves.
Sometimes I see Indonesians putting their "pronouns" as dia/dia, which is the general third-person pronoun, and I think at best that's a fundamental misunderstanding of why "pronoun in bio" is a thing, and at worst that's straight up mocking. It would be so much more fun if instead they put which variation of first-person pronoun they use. "Saya" implies you're very polite, "gue" implies you're chill and (overly) friendly and probably from Jakarta, "aing" implies you're from Bandung and don't give a shit.
The thing with third-person pronouns is that it's third-person. People don't use it when they talk to you, you don't use it when you talk to people. People use it when they're talking about you, and you're not part of the conversation. So making your pronouns visible is telling others how they should see you, even when you're not in the room.
Which is valid. But I think it's a curious cultural thing, more pronounced in western culture, that you get to decide who you are. Eastern culture (from what I know i.e. SEA and East Asian) tend to emphasize your role in society more. You're not just who you are but also who society sees you as.
A fun comparison is gender in Indonesian language. We don't have gendered pronouns at all, but we have gendered honorifics. While English is limited by Miss and Mr, we have a dozen more and we use them way more often; in many cases they replace second-person and third-person pronouns entirely. Many of it is gendered and all of it shows the person's role relative to the speaker. "Pak" is an older man who receive a higher degree of respect, "Mbak" is a woman who might be older than you and receives a modicum of respect, but she's not that old and it's not that respectful and in some cases could even be derogatory.
The thing is, you can't really put "honorific in bio" like English speakers do with pronouns because which honorific to use for you depends on who is speaking and who you are to that person (and not necessarily who that person is to you).
In regard to putting pronoun in bio, I guess I'm still Indonesian after all because that's also how I regard it. I'm pretty firmly feminine to myself, but I don't feel about it strong enough. For the purpose of referring to me when I'm not in the room, you can see me as a boy or a girl or something else entirely. Hence, I go by any pronouns; I'd like you to see me as any gender you see me as, and oftentimes I'm delighted if you see me differently.
Mind, this post is just me navel-gazing about linguistic features. Sexism and transphobia are still issues that exist anywhere, regardless of the spoken language. I just hope people don't get hung up on the usage of gendered pronouns instead of examining the real issues.
