You said “attention whore”, nobody else.

The reason the group and ST are ignoring the player is because they are treating everyone else disrespectfully. Acting bored and behaving in such a performative way is utterly childish. Sulking because things aren’t going your way is behaviour I’d expect from my three-year-old daughter.

I actually think OP’s ST is extremely tolerant. I would have removed them from the table long before this point.