I am to a degree. I look for gear that offers the best value and utility for the weight/bulk. Sometimes that means ultralight gear, sometimes that means mid weight, and sometimes I value the durability or utility of an item enough that the weight doesn't matter. I am very picky about WHAT I pack in and WHY I am hauling it in. Not all of my gear is ultralight but all of it absolutely must earn it's keep.
For instance:
1) Water - this is a must have and goes on EVERY trip to the woods be it day hike or backpacking trip. It needs a container: the lightest way to carry it is in a thin, plastic 20oz bottle. The downside to that is it can't be heated in that container for cooking or warm drinks in winter or sterilized by boiling. Often stainless containers are recommended for cooking in for durability. A Nalgene bottle and Ti nesting cup are common on backpacking trails as they work well. My preferred water vessel is the Heavy Cover Ti canteen kit. It holds slightly more water than a Nalgene at 1oz less weight, the canteen and cup can be cooked in and placed directly in fire or on coals (no stove needed), they work seamlessly with most canteen carriers, they hug closer to the body than a Nalgene, they will last a lifetime. I could carry water a little lighter, but not with as much utility. I could have a less expensive setup but not with as much utility for the same weight. Since this goes out evert time, I invested in it.
2) Binoculars: I like smaller lighter binoculars because they work plenty fine and have less mass
3) Bow: I'm carrying what I like because I like it and I don't care what it weighs
4) Sleeping gear: its easy to drop a lot of weight quickly here and it doesn't always cost a lot. Hammock and small tarp vs tent: if your in trees you can shed POUNDS over a tent, sleep pad, and bag, cut volume, and still have acceptable shelter and warmth...no brainer IF there are trees where your at to hang from
5) Knives: as much as I love my customs, if I'm looking to shed weight often my handmade fixed blades get left at home in lieu of a $15 Mora Companion...these work, hold an edge well, and are stupid light.
6) Fire prep: sometimes I pack an axe and saw...its GOOD weight. If I plan to use them a lot I'll spend less calories hauling them in that making camp and feeding a fire without them. The key is leave the huge axe at home and bring the 3lb boys axe and a small folding saw. For <4lbs of pack weight you can save TONS of time and energy in the field come time to make camp and maintain a warm fire. You could also bring less food and less water to accommodate for that more efficient tooling choice.