Because there is a huge stigma against sex workers, and while it is always worse against women than against men, nudity and especially porn can still derail careers.
No defense needed for Posey.
Others point out that if he draws positive attention to the site, a lot of people are more likely to subscribe to additional accounts.
A lot of people know him because he's been in the business since 2000.
There are definitely many people who are entirely heterosexual or homosexual and are that way their entire lives.
In fact, given that his acting career is still very much in swing, we hate to say it, but he'll probably err on the side of showing a little less than he might if he were done with acting.
He was born and raised in Santa Monica.
We have no clue what us Tyler Posey doing, but we like the view at his firm ass and muscled legs and in the end it does not even matter what might be happening, as long as there is ass for us to watch and enjoy.