I would love my comic to succeed - as everyone probably. And I really wouldn't care if the fandom was "bad", at least by the standards most people have for bad fandoms. I have been active in many of the communities people consider bad and I never found them to be that. In most cases what the internet perceives as these super bad fandoms is mostly harmless. I have been active in Sonic forums, bronie communities and have met many "nerds" through my hobbies. And while I had unpleasant experiences I had way more positive ones. What is bad about fandoms just usually sticks out more. Also , drama is part of most fandoms and if you get big, there is always a chance to have fans who produce it. Though most webcomics don't reach the amount of attention the fandoms I was in get.
That being said I would of course prefer a positive and fair community and would position myself as far away from toxic individuals with public statements and try to stand by those, who get hurt by it.
Buuuuuut I still wouldn't say no to a toxic fandom. In the end we as creators are not responsible for the actions of people who like our work (assuming we don't produce content that encourages immoral behavior). And if I had a fanbase huge enough to make a living out of my art, I would be very, very thankful. Not cool to judge the people who brought me where I was.