Wow. They messed up.
It's funny... last week (or the week before?) I ordered two bottles of rum (I needed one, but there was a minimum quantity of two..?!!?!), and they just handed it off to me, no ID, too. I asked this guy scrutinizing my driving license and tapping in my DOB in his little tricorder thingie how long this new policy has been in effect, and he seemed to suggest it's been a few weeks, so I mentioned my rum, and he visible winced. I then thought maybe it was just this driver being one of those "If we're going to have rules, we must enforce them!" types, so I told my husband about it, and he said the same thing happened to him (had to show ID) for something he received, so the ID policy is real, but not all delivery drivers are on board with it.