Eh, yes and no. I wouldn't say that they're operating the camps, but kapos are an unfortunate reality.

I'd agree that homophobia isn't the primary concern for most straight people, but with the caveat that it is the primary concern for the families who are worried enough to enter the conversion camp pipeline. I'd also argue that homophobia was a primary method of control via fear by specifically the preachers in the camp pipeline, though that stick is getting worn out and they're starting to swap to transphobia for fresh fear. There are many roads to hell though, so you're right about it not being their only concern.