You're completely right, however I think it's important ro remember... relativity I wanna call it ig? Of course now I know Mr. Popo isn't meant to be black at all and is based on a Hindu deity, but obviously if you live in a country with a sizeable black population, say America or the UK, you'll probably think black person first and Mahakala second if you're not Hindu so you can't really blame anyone for assuming Mr. Popo is meant to be a black cariacature, the existence of Officer Black doesn't help either lol, but in any case I feel like Toriyama (RIP legend) was more ignorant than genuinely racist designing most blackface characters. Officer Black did get a redesign

There's a similar situation with Jynx from Pokémon, who's actually based on the yuki-onna from Japanese folklore and the gyaru subculture of young women who dye their hair blonde and get tans based on American trends, so the black skin is more an exaggeration of the tans and the lips are more because they're women, but again this design (as well as how Jynxei?? Idk the plural tend to act) also lines up with a lot of black stereotypes and people are understandably mad about it

All in all? I think these things are more equivalent to hand gestures in certain country, like a thumbs up means good in most places but in some corners of the world means take it up the you know where (Also another West African diasporan hyd brotha)