

Yes, language matters and they used it correctly here. As an intransitive verb it means that someone is not detectable. As a transitive verb it means that someone else made them disappear, which usually refers to being abducted, usually by an official group like an arm of the government.
It has been used that way for decades to indicate when a governement kidnaps citizens to detain or kill them in secret.
It’s because they’ve given an LLM the ability to ban for “promoting or threatning violence”, and it’s terrible. It basically sees two “bad” words on one line and send out a ban. It seems like an attempt at making people use words like “unalive” and things like that.
Interestingly it doesn’t work if you spread it across more than one line(the haiku and similar bots don’t get banned after quoting comments that get banned).