Marco Arment was more showcasing the differences between the Apple store and the Microsoft store. At the Apple store I can be left alone by simply walking up to a display and playing with a device. Maybe a sales person will come up to me and ask me if they can help me, let them know that I am just checking things out and they leave.

At the Microsoft store you can't get a single moment of privacy with a device to play with it. The sales person will continue to talk, they will take over from whatever you are trying to do/play with, they want to discuss specs, they want to showcase very specific pieces of technology, they never leave you alone, even if you end up straight up asking.

Granted, Marco's post was slanted in that he is an developer for the Apple eco-system, but that doesn't mean that his post didn't contain the truth. I myself have experienced exactly that at the Microsoft stores. They try to hard to copy the Apple stores, but fall hard.