I have seen comments along the lines of "Onlyfans spotted, opinion dismissed," numerous times online under posts/videos completely unrelated to a content creators OF business. The idea that a person is a sex worker and therefore a slut (in a derogatory rather than reclaimed sense) and therefore they and their opinions are worthless, is the unstated logic of this sentence.
The misogyny drips off of the concept of an Onlyfans lessening someone.