Thats the difference between lightweight hiking, possibly solo and expeditions, possibly with porters. You divide a wisperlite by 3, tent by 3, first aid by 3 etc you can see how its worth it. Also when your melting snow you are prepared for it, you are not anticipating going far and probably with a camp.

As for freeze dried food

https://www.mountainhouse.com/M/product/beef-stroganoff.html?variant_id=262

Its not particularly energy packed and digestion of it is questionable in my opinion. Where as
https://marschocolate.com/snickers/snickers-original-single-10-pack

Is alot less bother, easier to get etc.no fuel needed. And lets face it, if you are going lightweight there will not be long spaces inbetween towns, get a fire going, some steaks bacon chicken when you get to town smile