He is a paid professional. I've noticed his type on non-political forums all over the Internet. The snarky tone is designed to convince Millennials and weak-thinkers that these trials are "right" and have some special insight that the rest of the rubes out there just don't understand.
One tip off is that they block their posting history. I'll give the "Newbies" a couple of posts and then zot 'em as worthless parrots.