Always been a minimalist (others pack all the latest gadgets). To each their own.
That said, I've got little high tech light weight gear. (Stove 30years old Optimus8R, bag - Heavy synthetic, 30 year old ceramic katadyne filter). Only "new" lightwt "stuff" is a new groundpad and tent.
Pack for 6 day hunt weighs 37-40lbs (everything in/on pack). We called that 2nd line, ditched in firefight. 1st line, on the body (cargo pockets/belt/harness/etc) is for E&E (or final stalk in hunting) also adds weight. Bow/rifle, 32oz water, knife/bone saw, bear spray, map/compass, binos, calls, rangefinder, beacon, tag/ID/pen, game bags, clothes you're wearing, boots, hat. My guess is that all comes to 15-20 lbs depending on weather, right? Never weighed it. Desert hunt (no filterable water, pack weight would probably double)
Then there is body fat/metabolism, like others have mentioned. After two x 6 day hunts with 1 rest day in between, for me, that's always about 5-10 lbs extra because on day 13, that weight went somewhere...I feel lighter (and more alive)! Wish I could start w/o that!! Metabolisms are different. I only eat 1 Mt House for dinner and power bar for b-fast, handful of trail mix for lunch. Others probably need double that.
Bottom line, take what you like/need/can carry. No one is going to weigh what lightweight backpackers weigh (or you can't be hunting, right?)