As another user pointed out to me yesterday, a lot of these people are brought into right wing politics by some tangentially related content. “How anime went woke!” “Does watching Dragonball make you a liberal?” “The left is attacking anime!”

You like anime and watch those videos, get mad about your favorite character being a woman now or black instead of white, whatever. That leads you down the ShitTube rabbit hole that is designed to direct you to anger inducing material that is related to what you watched, so now you’ve gone from “why is Naruto becoming BLM propaganda” to “the left is literally the antichrist and wants to kill the entire world and make you gay only Trump can save us.”