I was wondering if your tool was displaying cache as usage, but I guess not. Not sure what you have running that's consuming that much.
I mentioned this in another comment, but I'm currently running a simulation of a whole proxmox cluster with nodes, storage servers, switches and even a windows client machine active. I'm running that all on gnome with Firefox and discord open and this is my usage
$ free -h
total used free shared buff/cache available
Mem: 46Gi 16Gi 9.1Gi 168Mi 22Gi 30Gi
Swap: 3.8Gi 0B 3.8Gi
Of course discord is inside Firefox, so that helps, but still...
This is what I'm trying to get across to you here. You've posted the same notion multiple times in this thread. The consumer share isn't the smallest part, it's most of it. All the oil we extract serves to make products, transport products, sell products to the consumer - you. It's not being being burnt for fun.
When you engage in consumption, any amount of it, you're pulling a string connected to a million other strings that mostly end up in an oil well one way or another. The luxury you speak of is in that consumption, not the lack of it.
And if you think otherwise, compare your lifestyle, your lifelong level of comfort to that of someone who spent their whole life living in a hut in Mali, whose lifelong emissions equal a few months worth of yours. Now try to tell that person that you're not responsible for the gas you burn, it's the fault of those that provided you with the option to do it. It's insulting.