"Do I understand this correctly BLM, that you are asking about joining OF..."
No, you do not understand this correctly. I am not "asking about joining OF". These are musings (concepts of ideas) posted in the Pub sub-forum. I repeat; the Pub forum.
"...which is a paid sex service?"
I wouldn't know, I don't have an account. Do you? According to Wikipedia it's not all about sex, apparently:
"OnlyFans is an internet content subscription service based in London, England.[3] The service is widely known for being popular with sex workers who produce pornography,[3][4] and also hosts other content creators including athletes, musicians, and comedians.[5][6][7]"
"Not a very pleasant or indeed legal avenue to pursue or, indeed solicit."
Couldn't speak to the pleasantness of it, but I assume it's not illegal in countries where it's not blocked. Wouldn't you agree? And to state for the 3rd time; I'm not soliciting anything - there isn't anything to solicit.
Hope this clears up your astounding number of misconceptions. Indeed, if I had been a cynic I would have said you were being deliberately obtuse. But that's not you, is it?