Yeah, I was gonna say most of those obscenity laws predate the war. The US influence was more just the influx of comics and cartoons, anime and manga as a whole are very heavily influenced on old American cartoons/comics. Also the old semi-joking conspiracy theory that Japan got really weird as the result of background radiation from the atomic bombs and/or the culture shock of going from an isolationist military power to a pacifist trade power.
isn't this one of those cringy incel memes where they say that any woman who won't bang them has so much sex with the chads that her vag is roast beef
Yes. This is their rationale for "well if you aren't my perfect pure waifu who has never had sex before you are disgusting on a physical level and I'm actually a hero for not having sex with you, women are inherently evil whores".
See also "used goods".
It's thanks to cease pools like 4chan that I didn't even know if that's a real thing or not.
It gets spread around so much
This is probably how other common misconceptions started too