"you end up stuffing too much code into your controllers, because you don't know where else to put it"

And that wouldn't happen to have anything to do with the fact that "you" either don't know any other patterns or solutions besides MVC, or are under the impression that using MVC somehow forbids you to use other patterns?

Not to mention the fact that the definition of MVC that the author uses is false (in a way that describes MVC as more simplistic and limited than it truly is), but after so many years I'm not even going to argue with that any more. Just fucking Google it.

tl;dr: Those who cannot learn from history are doomed to repeat it.