Because the Marxist campaign to the masses and malcontents failed in the US, since there was already so much miscellaneous propaganda to tempt the layman under our permissive-for-the-time publishing laws, so they had to retarget for the intellectuals, but American egalitarianism and focus on the individual caused us to not care about class wars and to rightfully mock the conditioned intellectuals the co-opted centers for higher learning started churning out, rather than automatically believing them because they had a degree from a place with clout earned from past grads. As a result the left festered in bitterness while the right continued to reform themselves in areas like equal rights, freedom of expression and religious neutrality, but without accepting Marxism which had been slipped into these "destructive" movements to unite them to bring the US to "ruin". Instead we just improved our country, did whatever we wanted, and still traded peaceably instead of stealing from one another because muh class war.
So lots of bitter brainwashed student debt holders and random junkies primed by multi-generational failed "revolutionary theories" to be the very incarnation of hypocrisy and moral destruction were left with no real payoff and missed the chance to be lined up against the wall and shot the day after the people's revolution "finished". What's left is muh gender revolution. Then the Japs turned against their psychotic masculinity/supremacism because it got them nuked to shit and everyone hated them for raping little girls and torturing their POWs and stuff, so they decided as a culture to kill their old culture by doing equally psychotic passive-aggressive tranny and pedo bullshit (more than they already had to begin with under the old culture, which was already a lot).
Then some retarded faggots from both countries fed into each other in a recursive loop online and hey presto, you get this shit.