I have went in with 11 lbs (using rope to climb, my saddle, 5 squirrel steps as a platform, my hoyt, 2 arrows, and a grunter) it came in at 11 lbs and 3oz. It was fine. Definitely not uncomfortable.
Went in with the same set up plus an extra arrow, a small platform and a thermocell, weighed about 16 and 5oz, and honestly did not notice a difference in weight. Took a couple extra seconds (like 15) to hang the platform with the squirrel steps hung 2” above it. I was super comfy for 7 hours and didn’t even notice a real difference when carrying it.
I understand the idea of not carrying around 15lbs or more of stand weight on top over everything else you take into the woods, but I cannot understand this ultra light craze ( I chalk it up to a super marketing technique) especially if it sacrifices some of your comfort or safety. Sure an extra 10-15 lbs is noticeable but if an extra 3 lbs in a backpack or strapped to your saddle, is the make it or break it for you, then you are probably physically compromised to the point that you should not be hunting from an elevated position to begin with. Will everyone agree with my thoughts? Probably not! But I doubt anyone can show me evidence to the contrary.