It's not just Mustangs, kids. Go check out the Bronco boards, Ford's allocation and production "system" is broken, there are guys that ordered Broncos back in 2020 that still don't have their vehicle...
I'm not sure if they are necessarily quicker to receive a vehicle, but they are extremely easy to deal with. Easiest vehicle purchase I've ever made, in fact, and a price nobody else I had contacted would touch.
From a Ford perspective, it will depend on demand for the vehicle and parts...