I think "exploding" was an unfortunate choice of words, and that was supposed to mean they are selling a lot(they seem to be popular in Brazil and are considererd high end).
It has been some time since I used linux, but in Windows, for your first question you just close the lid on your notebook or lock the screen(suspend), and for the "hard logout", you just logout, I thought Ubuntu used to work like this. PS: english is not my first language.
I think it was meant as jab on the audience and the general public, more like "Not even google engineers can appreciate a brilliant language, so who the hell you think you are?"
It's basically the place you drop it, everybody agrees that we should drop it on the needy, but somehow we always drop it on the banks and the wealthy.
I am brazilian and I am assuming OP is too, Amazon prices in Brazil are cheaper than the competition, simply because the local oferrings are really expensive.