Not me but I've known three people now that would swing to absolute extremes on a kinda half year to three year cycle. Like their thing now is they are an ultra atheist and then in a couple months they were the most devout Muslim possible and then ultra this and ultra that, seemed kinda like undiagnosed manic behavior. Very impassioned individuals, pretty intelligent, absolutely convinced in whatever their thing was at that moment, always trying to fight the "enemy" and save the world type stuff but seemingly totally unanchored. The switches would come with some sort of epiphany or a sense they were being tricked or fooled. I bring this up because two of them had done that swing from ultra right to ultra left and then one into kinda political no man's land conspiracy they're both out to get you. Haven't run into the other guy in a while so I'm guessing he has a new crusade by now.