Could also be that there simply aren't enough DAs, so they get super swamped. Maybe they aren't paying enough to get good hires?
Not an excuse, but that could easily add to all the other issues surrounding the DA conundrum. It seems like there are bottlenecks at the factory with cars piling up, and also at the Service Centers which can only hold so many cars at a time. It's likely a mess right now trying to figure out how to get a car from the factory to the customer. Add to that people backing out at the last minute or failing to get financing. I don't envy any of them.
So far, I've only dealt with an SA, and all the feedback about the SAs rings true. She's been amazing at getting back to me in a few hours at most. Hopefully they'll sort out the DA issues soon. I agree, any of us having issues with our DAs should be letting Lucid know.