Certainly possible—my first guess. I have first-year university students who collectively hold the positions necessary to post that comment in a Catholic Caucus thread, and there may be some among them who hold all of those positions, but I suspect that if they ever make it to FR they will have a slightly more nuanced view of the world and the Church than they have now.
Catholic Caucus designation removed
Luther mentioned plus many of the underground Churches in China are other than Catholic
Read your articles carefully before using a caucus designation