Correct! No time to rack, should be able to fire with either functional hand- which supports a mid-back, leg or chest holster, and an either-hand safety.
Or, there’s the wheel gun back-up.
The Glock was fundamentally designed to be used by people who aren't shooters. I'm afraid this covers a lot of cops. I know a couple of retired NYPD guys here who know nothing about guns beyond how to pull the trigger. They don't think like shooters and it's scary to be around them.