I have a hard time agreeing with this statement, especially since I experienced just that. The only thing I learned was that the documentation for the process was awful.
Furthermore, the statement is some curious attempt at irony that undermines his argument. I don't want to spend 10 years setting up a development environment, I want to spend 10 years learning a development environment. Such a line can be very fine, indeed.
(This being said as a regular Emacs user.)