one of the things they're attempting to do is forcefully detransition trans people.

In that case, maybe.

They absolutely do already have lists of kids that have sought some sort of medical care for gender dysphoria, or can create them.

Its possible. But I've seen the back end of the state bureaucracy on a number of occasions. They're more on the Mussolini end of the fascist spectrum in execution.

Vicious but more so lazy and cheap.

Particularly in CPS, the organization is nearly non-existent. A ton of this is running on the handful of people hateful enough to chase their neighbors for free.