In answer to your questions:
Yes.
Debatable. Tend towards yes.
Yes.
And yes. Whether the person suing would win is of course the question.
(Oh and you can start breathing again.)
LOL.
Breathless over this BS?
Hardly.
Your guy is the one who threatens lawsuits as frequently as most of us shower. And then rarely follows through.
But when you have nothing, projection is always a good go-to, eh?