I have a couple of "Yeah, but"s by way of reply ...
Yeah, but (#1) that's not how people are using them. I've seen more than a few people who put them on a bike without swapping out the chain ring. Seems more like a reason not to get stronger if they're using it that way.
And if we assume that there are those who are (and I do know a couple of people who have upgraded the ring as well but not nearly as many as those who have not), I say Yeah, but (#2) most terrain (at least here in the east) isn't suited for a 36:10 anyway. Take your pick why: too tight, too twisty, or too quick a transition to climbing (short power climbing is the stock and trade of east coast MTB.)
I just don't see the point of the added range. Did enough people really figure that an 11:42 range or whatever was too narrow? I'll leave the spinning end alone and just focus on the high end. Granted, to each his own and if you dig it and use the full range, more power to you (because you'll really need it.) But I don't get the argument that it's an improvement, especially on the high end. Running single, the largest gear I've ever run anywhere was a 36:15 in Wharton (and then only because I was trying not to get dropped in one of Slimm's Winter Insanity Cruises ™) and you know what? Even in that pancake flat terrain, it wasn't better than a smaller gear. It's not that I couldn't turn it over - it was because it's so twisty there that I was constantly scrubbing and rebuilding speed and over time that wears you out on a big gear. Since then, I've run a 2:1 or at most a 36:17 there and been quite a bit faster. I can't imagine how much it would suck to try to run a 36:10 for any length of time on a trail like that, which begs the question then of when do you use it? On a flat road? Off a start? Meh. Less can be more in those instances. One of the fastest starts in any race around here is the prologue at CP. It's basically a mad dash for a mile or so up a half-paved/half-dirt road. And with one small incline right off the start, I guarantee you that unless someone has the quads of a kangaroo, they're not running 36:10 up that road (or if they are, they're not up front.) They may eventually build up enough speed to be able to get into it without feeling like their legs hit a wall, but with two hard turns and a switchback into the woods, they're not using it for very long if they use it at all. Did they really gain an advantage in those 20 seconds when they were on that gear? I doubt it.