I use the Pornhub model program, I just started it about 3 weeks ago. I have heard both sides from models, some of them have no success and some of them make killer money. It's all about pushing views. From what I've seen and heard (someone may have more info on this than me) it seems to average out to around $100 per 100,000 views, so I definitely think it could be decent side income over trying to hustle it for your main source.
I will say that their model support is phenomenal. I messaged them and asked if I could have the videos that were posted of me (my pirated content) transferred over to me so I get paid for the ad revenue and they switched them over no problem AND back paid me on the ad revenue. They seem to reply within 48 hours every time I've needed to talk to them and have been nothing but extremely helpful and nice.
They also do monthly/yearly model contests with cash prizes- I think the top prize each month is $1000. They also run contests for videos, the most recent one was a JOI vid and the winner got a sweet video recording equipment package.
I have gotten a few custom video orders through people finding me there since I started promoting it and it seems to be a decent way to market to the people who aren't necessarily going to spend $10-$20 on a video, at least you can make
something off of them and direct them to your other social media platforms, where you could potentially turn them into a conversion down the road.
I use it more as a reward system "get me to this many views on this video and I'll upload another free one for you" or "once I hit this goal I'll upload a new vid on Pornhub for you guys!"
If you don't mind being in the public eye, have a lot of content lying around, or vids that don't sell well on other platforms etc. I think it's worth it.