A quick Google reveals it to be a real problem on Facebook, their properties and their messenger services. 12 million images removed last year: https://www.forbes.com/sites/mnunez/2019/11/13/facebook-inst... - but it hasn't stopped people advertising on FB.

Surely here it's a case of people rolling the two into one - "people who look at/work with porn must be sleazy" - rather than objectively seeing PH as a business that doesn't want illegal content on its platform anymore than FB does?