Let’s just call antis moral supremacists from now on. They’re determined to look like the most moral person while doing immoral things to look good. Ultimately all that matters is that they look like the most moral, virtuous person.

freedom-of-fanfic:

militant fandom antis who are determined to force everyone to behave the way they want on the grounds that behaving otherwise is immoral are moral abusers. 

the opening paragraph from that link:

Moral abusers are a class of bullies and control freaks. They often try to impose themselves upon others and shield themselves from criticism by presenting themselves as having the moral high ground. Many also seem to genuinely believe they have the moral high ground and that all criticism against them comes from immoral, self-serving people. They don’t view themselves as control freaks or abusers, but often instead see themselves as stalwart opponents of the “real” control freaks/abusers, which tends to be anyone who doesn’t subscribe or adhere to their own (usually very rigid) views of right and wrong. (Their logic is simple: if you don’t agree with or follow their system to the letter, it’s because you’re immoral or self-serving. In their minds, no other possible explanation can exist.)

Please read this link if you’ve ever struggled with understanding the mindset of a person telling you you’re an irredeemable person for shipping something they don’t.