>>62077335>>62080960>unicornsAnon, unicorns got their names from the mythical beings. They are wild and ferocious animals that are hard to approach and dislike everyone. Except for virgin pure maidens, which they become docile.
In one of the most famous stories, a virgin maiden uses her charms to lure unicorns to kill them and extract their horns for alicorn, powder made from their horns which was said to have magical properties.
This is why JP always uses the "Unicorn Emoji" -> "Horse Emoji" to show that they were betrayed, and she was just after their horns/wallets.
You will see a lot of this behavior /here/ instead of everywhere else because this is the only place that someone can do it anonymously. In the beginning, before vtubers were even a thing, this was seen as an insult, since they were implying that you were just their plaything to be hunted, basically the equivalent of being called a "simp".
As time went on, it lost a bit of this implication in JP, not being used as much as an insult anymore, more like a joke. And in the west, most of the impression that was translated was their anti behavior.