I mean we're already discussing porn, so I'll just point out most of the "gonewild" posters are just advertising their onlyfans. Do you think every single article posted here is done so with pure intention? Several of the popular apps for lemmy have banner ads. I hate ads more than the average person (in real life not on lemmy) and even I acknowledge that you'll never escape them. Even when you totally ban them, they still will be present

I think we all know there's going to be a few bigger instances that people use for lemmy and those ones will eventually resort to ads to keep the lights on. Historically, that doesn't cause users to run away screaming and lemmy instances not federated with the most popular instances will face a tough uphill battle retaining users