Quite "Fact" you say here, let's say it's one of 1.2 billion active qq mails, or someone interpersonating it, also, most porn also well versed in china, knowing this email suffix used by chinese doesn't mean he's mihoyo employee, or just chinese person who just too horny, knowing no further incident means it just someone impersonating, i also have account on weibo, weiqq, and baidu, even i know, such thing isn't true. It just a usual cycle "High demands" it's one who also skyrocketing genshin porn in social media and twitters.
r34 industry is an industry with patrons and creators, you need to follow the "high demand" and popularity percentage, it's a basic marketing knowledge, that you need something viral to create content with it