An aside: While the comfort and safety of fans is clearly not a top priority to everyone, it should be noted that aggressively negative behavior towards a fanbase is a great way to lose any and all goodwill your audience may have towards you -- and, eventually, your audience altogether.
If you prioritize your own comfort and "rights as a person" (read: repeatedly demean/mock fanwork and endorse the harassment of other real human beings for things you personally dislike, including while actively seeking out things that distress you) over the wellbeing of others, you are being an asshole. If you are willing to flirt with other people as a joke but balk at people taking that (frankly tired and at times downright homophobic) joke seriously, you are being an asshole. If you are willing to take inspiration from fanwork that you enjoy, with or without crediting it, and still insist on being able to dictate what people can and cannot make based on your own moral standards, you are being an asshole.
Distress and disgust at fanwork you do not enjoy is completely valid. Requesting that it not be taken into spaces you manage or otherwise shown directly to you is totally fine, and if people insist on breaking the rules of your community space then that is absolutely a bannable offense. We would even personally go so far as to say that, should you be the type to "lurk" in your AO3 or Tumblr tags and happen to by sheer bad luck stumble on something that you dislike to an immense degree, quietly and without fanfare blocking/banning someone that you are personally uncomfortable with being in your community spaces is, in the grand scheme of things, relatively inoffensive. If you are actively seeking out things that distress you for the purpose of crossbanning those who create it, however, you are -- once again -- being an asshole.
We do not say this oft-tread punchline lightly: you are going to lose subscribers. You are going to lose the core backbone that makes up fandom, you are going to lose any respect your audience has for you, and the spaces you frequent and manage will begin to be considered unsafe by others. There are plenty of people who are the most polite, respectful, well-meaning, and boundaries-following individuals you could possibly want in a fandom*, and many of them will be driven away by this sort of behavior. You will instead be curating a fanbase full of those who can tolerate and potentially even engage with stalking, harassment, threats, and outright harm to others that you personally deem unacceptable.
*(We're talking model citizen by even the strictest standards. People with next to no interest in shipping (or smut, or RPF), who are actively engaging with community and seeking to bring in new fans, whose fanwork all falls fully within the bounds of the "acceptable" even when posted in private spaces, who are loudly and proudly allies for marginalized folks and are invested in deterring bigotry whenever possible.)
We are already seeing people actively distressed by the actions and behaviors of people they assumed they could trust (as role models or otherwise) -- and while the refrain no one you look up to is better than you are still applies here and may be cold comfort for us, that does little to alleviate the very real and material impact of people being soured on your work for good.*
*(And also, people will get hurt. Doxxing, persistent harassment, stalking, death/assault threats, falsified accusations, bigoted comments, the whole works. But even if that's less important than your own comfort so long as that stuff never touches you directly, it still hurts your bottom line and broader reputation to be associated with this sort of thing.)
We do not think having engaged in this behavior makes someone a bad person. We do not think having outdated, iffy, or misinformed beliefs makes someone a bad person. We do not consider speaking overly harshly at times or having an unawareness of one's impact on others to be a cardinal sin. It is, however, room for improvement and growth.
Once more with feeling: be better.