I seriously doubt that. People who have axes to grind with posters they don't even know have usually been here before and gotten themselves banned.

This person signed up in 2013 and made a handful of posts to keep the account active. And now that certain posters have recently been banned, he's posting regularly now.

This is what more adept trolls do. They set up usernames years in advance for when they'll need them.

If he keeps the unprovoked attacks up, he won't be here very long. Call it a hunch .