How we made it to 2021 without having per-application rebindable keys built in to our OSs is just one of many mysteries of how personal computing came to suck I guess.
IFF you knew about it. Gnome X.X has always suffered from poor interface intuitivity, while simultaneously having some great UI/UX features.
You'd need all platforms to have this and then a multiplatform abstraction layer to exist before it became useful... and by useful I mean: you can start rewriting every application.
If you ask me, multiplatform abstraction layers are part of the problem with this industry, not the solution.
Shame that the TouchBar is hot garbage.