He is making a comment about the general tendency this subreddit has for being anti-semitic and pretending not to be.

I'd say he has a point, considering many popular posts and comments yesterday were ones that had decided, before the dust had even settled, that the attack was a false flag by Jews. The number one post on this subreddit yesterday was a comic that expressed anger about not being able to attack Jews.

Then of course there was the time a Holocaust denial movie was featured and Hitler's image was in the sidebar, or the multiple popular posts here that talk about how Hitler wasn't so bad. Or the presence of a closeted Neo-Nazi moderator that no one seems to have a problem with. Or the fact that so many conspiracies here revolved around Jews controlling, enslaving and ruining the world.

So, I'd say it is more than one user.