unpopular opinion: a certain level of personal responsibility needs to be taken when using a site like tumblr. take the proper actions to protect yourself from things that trigger, quick, or just generally make you uncomfortable. be progressive about it. do not expect the rest of a website’s population to change and alter itself for your personal benefit because it will not happen and no amount of anon hate, harassment, and bullying behavior will change that (plus it doesn’t make anyone sympathetic to your side of things; it just makes you a colossal asshole)
I think the reason the PMMM fandom has a weird obession with German is the fact that a lot of the songs on the soundtrack are in pseudo-german. It isn't a very good reason, but that's the one I can come up with.