The reason the rotors are replaced at each brake job is, the manufacturers are trying to shed weight from vehicles where ever they can. And one of these places are the rotors.
So the rotors aren’t as thick as they use to be where enough meat is left to turn them.
Also, it can be difficult to get the proper surface on the turned rotor where brake noise doesn’t occur.
So instead reusing the old rotors where they may warp or cause brake noise, they’re replaced.
I’ve installed CarQuest brake parts for many years in all kinds of vehicles and never had a problem with them.
I just make sure that they meet or exceed the manufacturers specifications.
Tester