I agree with the overall sentiment, but I wouldn't exactly note their lackluster presence (or complete lack there of) in the retail stores. The old Mac Pro tower got the same treatment.
A couple of weeks ago I met up with a friend who I used to work with and he was telling me he had recently bought the nMP. He just wanted the base model, so figured he'd just head down to the store. As they brought it out from the back, a group of employees hovered around them as they did the transaction as if it was something special, with one of them eventually saying, "no one's ever bought one of these here." Of course I'd expect 99% of nMP sale to happen online, but I found that kind of funny.
I hadn't been in an Apple store in a few years, so I popped into one the other week while my SO was at an appointment and I was amazed at how open and empty it felt. Without the people (this was a random Thursday evening) and with all of Apple's devices pretty small and thin these days, it was hard to actually find the desktop Macs.
I can still remember visiting that store when it first opened, and how full of the software shelves, registers, and physical objects it was. It's certainly interesting to see how things have changed in basically a decade.
(Also, with few people in the store, it felt strangely alien, because I was suddenly cognizant of how many Apple store employees there were, idling around quizzing each other on Apple Watch stuff, or making sure everything was connected and secure, or wiping down every smudged screen. It kind of reminded me of people talking about the ghost cities in China.)