Just because OnlyFans has been around for eight years doesn’t imply that it’s been popular for that long.

Sample size of one, but I personally had not heard of it until 2020, after some YouTuber drama, and I am a somewhat terminally online human. I suspect it didn’t reach broad cultural awareness for a fair bit longer than that; I don’t remember any people IRL talking about it until OF talked about not allowing adult content like a year later.