If somebody ever tries to make you feel bad for writing a problematic fic just remind them that Game Of Thrones was the most-watched tv show in the last 10 years and had every problematic trope under the sun, it was seen by millions of people and nothing happened.

Fanfiction, in general, will never have the same reach as mainstream media, so go write your problematic smut, GoT exists, there is nothing anybody can tell you.

Since this blew up.
As fic writers, your job is to put appropriate tags on your work so people who don't want to read problematic stuff can avoid it, that is all.

Nobody holds a gun to your head and makes your read problematic content if you read It, it's all on you.