Similar issues have arisen with Diaspora* pods, also part of the Fediverse.
Plus there have been individual toxic users who have repeatedly signed up for new accounts on multiple different pods, several per day, in order to get around moderation. The most toxic individual frequently fakes the identity of people he dislikes when signing up at new pods. This makes open registration problematic and raises difficult questions about cross-pod reputation management.
Yeah I have accounts on amazon.com amazon.com.au amazon.co.uk amazon.co.jp and amazon.de because I want to order things from those countries, and nowadays they notice that you're not using the site from your own country when you go to pay and forcibly redirect you, which loses the thing you're trying to buy. It's not always obvious how to find it again.
Oh look, an anonymous poster who thinks that "objective science" only includes two genders. Apparently they never got much past primary school science and have never heard of the various chromosomal, hormonal and other variations that exist. Or they refuse to believe in them, because it doesn't fit with their existing worldview. That's the opposite of science.
A countervailing force is that people who meet online other than via dating sites can develop long-term friendships well before physically meeting, so in cases where those evolve into romantic relationships they are presumably correspondingly less likely to be impacted by physical appearance.
What do you mean "where is Weird Al?" He's already released a satirical song "Don't Download This Song", complete with wonderful Bill Plympton animation. And of course he made the song available for download:
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