And now, in one post identifies as straight, maybe bi curious and doesn't care about homophobia because as a bi person she doesn't experience it, and then minutes later in another post is a lesbian who only likes men.
If she's real, she's got some incredibly powerful OCD and should maybe stop thinking so much about labels.
I'm mostly betting they're a troll though.
I'm willing to bet there are boys that roleplay as humans on mastodon. While we lack concrete data, humans are a fairly popular race in roleplaying games such as Dungeons and Dragons. If there are at least 10 young men on Mastodon that play Dungeons and Dragons, there's a very good chance at least one role plays as a human character.