IMHO it's [running without a spare] another personal choice issue, and as a Jeep owner, I think personal choice (read that as liberty) is pretty important.
If you can afford the risk; have a recovery vehicle and a spare at the campsite (or trailer), then running without a spare makes some sense. Of course, this logic also applies to a DD Jeep. If you have a spare at home, and a recovery vehicle, then go for it. You might even gain a HP or two, or save a bit of gas.
Of course, if you blow a tire in front of me on the trail, don't count on me giving you a lift back to your base camp - at least not until I've hit the loop and am on my way back out!