Maybe it would be fine if it was random 4 words like in the XKCD, but otherwise it would cause people to plaster sticky notes everywhere and hardcode it in their computers, no?
Agreed though I'd argue sticky notes happen even with user supplied passwords. When I worked at a university, I cannot tell you how often I found a sticky not on the bottom of a keyboard with a list of passwords.
if you work from home, a sticky note with a strong password might be safer than a memorized employee-chosen password
But then imagine once in a while they have to go out to work, they might have to take this along with them and then both laptop and the sticky note together are vulnerable for either accidental theft or intentional.