This seems wildly impractical, as the guy pulled the label out that still had a UPS label on it, which indicates that they sent it UPS to this facility which then put it in a locker.

If they're going to send it UPS anyway, why not just send it to your house? I can't imagine there are that many people who would rather have to make another trip to go pick packages up vs. having them left at your door (in most circumstances; there are some instances where it's more convenient to have something put somewhere you can access it 24/7 rather than dropped off, but I imagine those are limited.)