These range from valid but minor complains (Merry Christmas vs Happy Holidays, virgin vs incel) to random nitpickiness. Complaining about translating "hentai" or "lolicon" as "pedophile" in the context of an adult man at a school is just silly. It's not like Japanese words and their commonly-used English counterparts match 1:1 in meaning anyways; that's simply not how languages work.

Some of the examples also make me question how well they really know their Japanese - specifically the Oshi no Ko one. コンプライアンス may have come from the English word "compliance" but just translating it as "compliance" would be silly and incorrect; it means more than that in Japanese. Far too much to fit in the subtitles here without it sounding unnatural. See this document for some details. Honestly I think "political correctness", while not quite the same thing, fits the spirit way better than the English word "compliance" would and I'm not sure how better to put it.

terrible sub’s full of zoomed brainrot slang

I assure you the teenagers in Japan also use slang, as do their manga counterparts.