I do keep my config backed up and synced between my computers. It doesn't change that much but it's nice having it easily synced across my many machines when I do make a change.
And no, copying text hasn't been Ctrl+c. That sequence sends a sigint to the process, not a copy request. To copy text by default cmd made you enter a mark mode which then had you essentially draw a rectangle and it would then copy as newline characters even when it should have just continued the line. The old copying process of cmd is terrible.
O RLY?
Do you have a transparent terminal with a background image? (If so, well ... to each its own :^))
Do you transfer your JSON config files "all the time"?
>Copying text is a way better experience
It literally is Ctrl-C and it's been like that for ages. When did it become a "way better experience"? I missed that.
Modern UX is absolute trash performance-wise. And you're falling into the same pit as the geniuses of the story I mentioned before.