I said this on the page before previous, but unpopularity is determined in relation to your surroundings. Here, that opinion is exceptionally unpopular. But in a space dominated by some flavor of insecure political extremist? Not believing it might get you banned.
It's a funny twist of irony that political extremists are unified in their disliking of horseshoe theory (except maybe ancaps?). Whether you consider that a self-fulfilling prophecy or a kafkatrap is a matter of perspective I suppose.