tom k, you misread what the guy said, he didn't say he could go for 14 days with 10 pounds base weight, he said with a 10 pound pack. See the difference? You most certainly cannot go anywhere with an 11 pound pack for 14 days as an UL backpacker.
It's important to actually read what people say when responding, otherwise the conversation gets too confused, I believe he also missed what you said there, and believes you wrote that your pack weighs 11 pounds, or 10, or whatever, for a 14 day trip, which of course is silly, it weighs roughly 14x 2 pounds (food/fuel/etc consumed a day) plus your baseweight plus water.
I think the way for an UL backpacker to avoid this type of confusion is to get in the habit of weighing your pack as it will be the first step you take onto the trail, and forget all about your baseweight at that point except for purposes of trimming stuff off it in between trips, that way you avoid the sort of convoluted thing ul backpackers sometimes do with pack weights, whatever you are carrying is your pack weight, that avoids all games with what is a consumable and what isn't, etc. My last trip, where I had enough food for 7 days, a camera, and whatever else, was 25 pounds including water at the trailhead.
I was going to comment more on the lnt absurdity, ie, drive up to the location in a vehicle often big enough to be a bus in the third world, ignore your daily lives impact on the overall ecosystem etc, but I think that's something you have to sort of figure out for yourselves, or not. I'll just leave it at this, if you drive some large vehicle to the trailhead, routinely, spare me any talk of lnt, I have to breathe in your traces every day of my life as I ride my bike around, so I'm not really into that lie or pretense, I also see the impact of those behaviors on the ecosystem, and it's not pretty, getting less so by the day. Not to forget that when we got to the new world, huge sections of the 'wilderness' were actually very carefully maintained gardens and park lands, controlled by burns and other human behaviors. What we call 'wilderness' is the state of those gardens returning to a weed filled condition after we killed all the original inhabitants/caretakers, like your yard does before a new stable 'natural' condition can resume in a few hundred years. What we term 'weeds' are actually natures first responders, very tough, hardy, plants whose task it is to start rebuilding the damaged ecosystem, layer by layer, preparing it for the next step in the recovery process. Point Reyes, for example, is filled with weeds in most areas that are not grazed, and is in a highly unnatural condition between the trails, it hasn't burned in a long time, and it shows.
In the future, we'll return to a sort of balance again, by necessity. Big Sur, for example, suffers extreme and highly unnatural fires, and most important, too hot fires, which actually destroy the conditions the plants there had evolved to thrive in, ie, seeding by fire etc, because of the decades of fire prevention, which build up, in an extremely unnatural way, traces of huge masses of dry wood and brush. These fires are prevented primarily to protect the properties of the extremely wealthy who ring that area, at least to the North, or of the fortunate original settlers, and there is little chance that we will return to normal controlled burns there any time soon because it's not really possible with human habitations scattered too widely around that region, so using the term lnt in that context is beyond absurd, every single element you see there is a huge trace of highly unnatural processes we cause directly by our actions, ignorant as they are. High alpine stuff is another story, there if you're concerned about traces, start lobbying to get the heavily subsidized livestock grazing permits, sold far under market rates, revoked once and for all, and pull those ranchers off the teat of government aid and charity. That's how you actually solve the primary trace issues there from what I understand.
I suggest that before people throw out the term lnt they be extremely sure that they are doing that first... or at least, leave less trace than most do, that's about the best we can hope for in this present culture.