Yeah, Springsteen (and Bob Dylan, for that matter) clearly show that's possible to play anything, anytime, no matter how big the show. You don't NEED that perfectly timed light show, and you don't NEED a dozen guitars.
To Mark's defense, it may be worth mentioning that his routine probably saves him a lot of time (practising, remembering lyrics, rehearsing), time he uses to write songs on tour (which many artists don't). The quantity and quality of songs he comes up with never fails to impress me – in that respect, he's clearly better than Springsteen or Dylan. Well, better than pretty much anybody, I'd say. I would love a more diverse, spontaneous setlist, too, but I wouldn't want to get it at the price of less brilliant new music.