I'm pretty sure that most if not all examples of "passively correcting beliefs" is literally just telling people "no, you can't do that" directly or indirectlyagain, the reason this is even being talked about in the first place is because you were arguing that preventing sexist art won't prevent sexism, because the creation of or appreciation of sexist art must not contribute to the existence of sexism (because there isn't physical evidence that fits your arbitrary standards)
basically what you're saying here is that you don't believe that doing sexist things notably contributes to the existence of sexism (you talk about "the dregs of Tumblr" but this is basically just a Reddit-tier opinion), and I'm saying that sexism is people doing sexist things