Well, that's because he a poltroon. He can't back up what he spews with honest dialogue nor can he stand the thought of anyone disagreeing with his demonstrably false rhetoric and assinine assertions.
He is what we used to call a "WUSS".
He is the kind of person who won't deal with anyone face to face, but would spit in your food or key your car.
He is a weenie...
Yeah, I'm not even a Trumper, but I still find it funny. What's the point of posting, if you don't want to see both the fun and crazy in the comment section?