It seems some people feel bad or maybe guilty on BPL if they are adding back weight....like as if they are failing.
In reality, lightening (and refining) your gearlist is a process that is often most effective when you go too light and then add back only the functionality you really miss. If you've never swung back to some heavier gear, then you're likely either fairly new on your UL journey, or you're not really trying that hard. Trying gear that is maybe too light is a great way to push your limits, or more importantly to find your limits. Sometimes you'll be surprised (ie. I was nervous about trying a sleeping quilt, but they are GREAT if they're not too narrow) and other times your suspicions will be proved right (ie. A single wall tent has no business in the PNW IMO...unless maybe if it's super spacious).
Over the past 3 years or so that I've been involved on BPL, my baseweight quickly swung from about 20 lbs to 13 lbs in the first few months. That was easy. Then I kept shaving it down to about 8-9 lbs. At this I was bottomed out, because that list was for hiking with my wife where I needed to carry a 2 person double wall tent, large-ish pot etc. At that point I made the decision to buy some solo gear, and go lighter when solo and heavier with my wife to add back some comfort, since we do spend a reasonable amount of time in-camp. I sold the tiny 2 person tent and bought a lighter solo shelter (HMG Echo I) AND a more spacious 3 person (BIg Anges Fly Creek UL3) tent for my wife and I. A few other changes led me to a baseweight about 10-11 lbs when I hike with my wife, which is still light and my wife and I find quite comfortable.
On the solo side of things, I now have that even lighter shelter and I've got a few other gems like a Zpacks Zero pack. When I go solo I can easily hit the trail at 6-7 lbs. 7 lbs solo is total comfort for me....I'm wanting nothing. At 7 lbs I've got a double wall shelter, warm down quilt, 2.5" thick sleeping pad, bright headlamp (H51), plenty of clothes etc. When I try to push the limits of light (because I never want to stop trying to progress, even if I do test the limits less these days) I can go about 5.5 lbs in reasonable comfort. I'm still moving lighter on the solo side of things. I'd really like to get it down to 5 lbs and do a few SUL trips before I swing back a little and find a comfortable all-around balance which might come at 6.5 lbs.
Everyone's on their own journey though and there's lots of good ways to hike. We all hike in different locales and with different bodies and comfort levels. Some people hike 14 hours a day and just need a tiny place to crash, while others only hike 4 hours/day and really benefit from stuff like a camp stool and a bigger tent. It's all about matching your gearlist with your wants and your style.