they courted these people with games like HI3 and GGZ and now they have to sleep in the bed they made.
wonder why no one else has this problem, like even Mica, the cockroach of china? because they were able to offload them to Mihoyo games. FAFO, 0 sympathy
The first past of your post is kind of true, Mihoyo has been pandering to this type of audience for a long while, more than most nu-gacha players known, doesn't help that most people who whale are leaning towards this "type", there's the reason why they don't do such things (like giving relationships to characters).
But the second is just autism, what do you mean no one else has these sort of problems ? If you mean the attempted stabbing of Mihiyo's CEO then sure, that's rare and I can't really remember any other example on the gacha sphere but they very well don't have characters in realtionships, sell ML, glaze their MC etc.
Literally most gacha games do this shit, WW, Snowbreak, Azur lane (surely Promilia will too), GFL 1 and 2, Endfield (not OG arknights though), Trickcal, FGO, Idoly Pride, Gakumas, Uma musume, Nikke, Blue archive etc etc.
I could count dozens more especially if EOS'ed games are allowed but you get the point, this isn't some "mihoyo only" issue, it's hard baked into the genre and honestly, kind of Otaku culture in general.