how are they different than any other prostitutes?
That's the idea. Hollywood is nothing but a gigantic brothel, anything you want is for sale, including children of either sex.
But money isn't enough to buy in. You need power; the power to make people famous. That's the currency of Hollywood. People who show up with just money get serviced, but by another, lower level of talent. That is (perhaps) what was going on in L.A. Confidential, with the girls who are given cosmetic surgery to look like real movie stars.
I think Trump knows this, and I think he has identified it as a major pressure point, a major weakness, in the deep-state conspiracy that has tried to prevent him from implementing his agenda.