Perhaps an even more telling- even saddening - demonstration of how popular butker's views are. His T-shirt is now the highest selling one in the NFL store.
I think part of that is that sports in general is turning into a clique for reactionary bearded men. Even real sports like football seem to be turning into MMA or NASCAR in terms of the type of fandom it attracts.
It doesn't help that football is horribly boring to watch now because of the penalties and commercial breaks. You'd have to be pretty weird to enjoy watching two hours of commercial breaks and another hour of watching people stand around waiting for the official review of every other play.