No, I would rather do a side job than selling my nude body - even if I was to keep it as anonymous as possible. I feel very strongly about unauthorized people seeing my private parts - and by unauthorized I mean anyone I don’t have a sexual affection for.
And I would be ashamed even more if friends, colleagues or family got a hold of my OF and somehow figured out it was me (for example super drunk me could easily leak myself for whatever stupid reason).
I am aware that I would likely have a fanbase as I am a slim short king in my early 20s but I am making enough with my job and the regular IT stuff my friends and family come up with (building & upgrading PCs, fixing software & hardware issues, helping with privacy issues, selfhosting and smart home tech… the standard stuff) and I feel that I would make less or have less relaxed quality time if I was to do OnlyFans.
As for your friend. If they have any hobby they could make a side job (like I am doing with IT service) I would do that before. I got a creative artist friend who makes artworks and puts them on Etsy and another one does music & patreon and keep OnlyFans as the nuclear option.
Randy Marsh did it too
https://youtu.be/ZmojJJHFUWQ
https://youtu.be/bXaQr9MBlYs