TL; DR: It's fine to enjoy "immoral" fiction and you're both being assholes
Fandom policing and villain woobiefication/apologia seem to be polar opposites, but at heart they agree on one thing: That your morality is defined by the wholesomeness of the content you make and consume.
They just go from that premise to different conclusions, with the fandom police (1) saying that some content is immoral and must be censored, and possibly its creators bullied as well, while the woobiefiers and apologists defend by saying shit like negging is true love actually and war crimes are fine.
( Nazi and genitalia mention, this may contain thinly-veiled references to Star Wars fandom )