This might be a dumb question but do pron stars use what is told on this site?
Some pornstars do indeed PE, maybe not from this site but from other PE sites. They also do surgery.
It’s well known that porn stars take “performance enhancing drugs” before a scene i.e. Viagra and that some even pump for a temporary increase in girth. I think it’s more than feasible that at least some know of these exercises.