The point is not that people can or even should play in 2 hours, it's simply that John, as always, chooses to blame the lesser golfer for slow play.
JohnV and I played a course a few years ago that was not easy to play, nor easy to walk, and we did it comfortably in about 2 h 40 m. I don't recall what he shot, probably around 80, but I shot my normal 41-56=97 and I don't think I slowed him down at all. Given that my home course is both easier to play and an easier walk, I'd guess I could come in pretty darn close to 2 hours if I really wanted to (and if it were ever empty, which it never is, so the point is moot - the Sundays in fall thing was a joke, for those that missed the smiley).