When I talked to Kristen Graham on OF a long time ago, I bought a couple flexing videos from her. Can't remember the price, but I think it was reasonable. All the "free" stuff she puts is just tits, ass, and sex talk. I had a brief discussion with her, and she basically said she won't post any sort of muscle stuff for everyone to see because it freaks her vanilla viewers out, who presumably make up most of her followers.
This despite the fact that she's a semi-well-known(-former?)-crossfitter who put together a full home gym, spends basically all her free time training, has tons of youtube training videos, etc. Lifting and being an athlete is who she is, but when it comes to the sex work angle, showing the vanilla stuff is what will sell.