>>37811126It became a meme with underage /pol/acks because a left wing group started absolutely deluging the fuck out of /pol/ with interracial porn threads, for literally years. So hundreds of thousands of /pol/ users got this fetish. They brought it /gif/ and /b/. Some of them invented a "counter fetish" called the queen of hearts, which is supposedly women that only fuck white men.
/pol/ is basically "the america board", on most other boards Americans are a minority. So it confused Europeans on /int/ why, whenever they talked to an american, he immediately started talking about black dicks and interracial sex (because they were from /pol/). So it became a meme called "mutts law", that americans are absolutely obsess with interracial sex for some reason. It's because they all got their minds raped on /pol/ by left wing spammer groups.
Most of the hololive fans on /vt/ are casual users of /pol/, so they all know about this fetish, it's a big thing with them. That's why you get threads like this. No average person thinks like this.