It doesn't really trigger people so much, it's just a really offensively retarded hypothesis that's incredibly obviously wrong to anyone who has looked into these things before.
Imagine you like watching soccer. One day some dude who knows nothing about soccer comes up with some outrageous theory about how "the team with the tallest players always wins" which makes absolutely no sense and isn't true in the slightest. Yet because it's such a simple, outrageous claim, everyone who doesn't know anything about soccer will memorize it.
From now on, every time someone understands that you're into soccer will bring it up. Everytime. "Did you know that the players height actually determines success?" every single time it comes up as a topic, whereever you look.
Thats what epic angry neanderthal man is