I guess you confirmed nursing is a profession full of gay men not that the number of gay doctors isn't higher than usual
Even instagram models have a price and will escort, the question is whether they're cut for the job or not. I'm sure some might even settle for a wealthy sugardaddy. Unfortunately most guys who go on Grindr willing to pay do it just to get a cheaper rate and to hire an amateur guy, someone allegedly not available to others. I think it's also a good way for guys who want to escort to check the basic stats of the potential clients and see if they could handle him or not.