Well, I always do this, I search a simple question, like, "What is the weight definitions for SUL, UL, L (and now ML and KPL)", and I end up spending over an hour reading all the threads going years back so I don't ask a redundant question. Then I don't have time to comment, and am shy besides. But I'm trying to come out of the "lurker" closet so here's my comment. I hope this isn't too far off thread..
The thread, Backpacking Weight Ranks, covered the gamut of all weight label discussions, and went to the hilarious extremes of elaborate formulas for considering height and weight of the tall hiker, to adjust whether they could add a pound or so and still be considered UL.
What I didn't see, in any thread, were discussions about how many of us get cold easy and need more insulation in our kit. I hike mostly the high Sierra, which gets frosty at night even in summer, and have to carry more weight because of it. Extra sweater, sleeping bag with more loft material, and even more sleeping pad insulation. So do I get an extra pound, and still be able to call my kit UL?
And if you are carrying extra weight in your body (a bit tubby), shouldn't you ADD that extra weight to your pack baseweight when calculating whether you are SUL, UL, or L? That would imply that you are not really UL unless your body is, too.
Really, now, although there might be some truth in there, I'm not serious. JUST KIDDING. I got my baseweight down to 10lbs, and have been adding weight ever since. The fishing kit, 1 lb, the platy of Merlot, 8 oz, the butane canister stove instead of the alcohol or wood stove to save time, a bandana AND a microfiber towel, the 7.3 oz (ugh) gps (sooo much faster to find abandoned trails and xc routes!). BUT I made lots of gear (pack with all bells and whistles 1.5 lbs, max 32 lb carry for those 12 trips), still boil water in a beer can, and yes my toothbrush handle is shortened, so I haven't thrown in the towel. Going light has meant that I can bring extra fun things and still be comfortable and mobile. My baseweight is 12-15 lbs. So I call my kit "Light".
So I agree that going light is a mind-set. The lighter you can go, the more comfortable you will probably be (until you don't have enough extra stuff at night to make a pillow), and the more mobile you will be. The intention, and journey, of lightening my load (my journey included losing body weight) has given my time in the wilderness so much more freedom, freedom to move, without my load causing me pain. That wonderful feeling of sitting down in a high granite basin to soak in the wildness, and not dread putting my pack back on and continuing up.
That said, I'm all for defining packweight for the purposes of communication. And it's good to be proud of our accomplishments, but not good to wear it like a badge, be smug about it, or scorn those who aren't the same. Congratulations to the original poster! Thanks for sharing your joy. And to all of us who feel better because we've gone lighter! Yay!