Um, what? Not the couch, or the bureau, or the dining room table? Maybe this is true of furnished apartments, but for me, even the boxspring beats the mattress in terms of "this is so large how the heck am I going to get it from point A to point B". Mattress is pretty far down that list.
Not that this matters much for foam mattresses, since, once unrolled, a foam mattress is nearly impossible to roll back up and is just as difficult to move.
That said, the author's point about the initial ship of foam mattresses is a good one. Going with a foam mattress was the only reason I was able to drive it home in the back of my 2-seater to a very dense part of Boston and fit it into the lofted bed of a tiny studio apartment.
But when it came time to move? I sold it to the next tenant. No way that was making the journey out as easily.