I’d recommend staying with your current distro if you’re happy with it!
When you do a rewrite you want to create the same product as before just with better code / architecture. That’s not what Wayland tries to do.
I envy you for not having played Disco Elysium yet. Hope you find the time soon :)
To me it seems pretty clear: withholding means you don’t get your mail delivered and cannot fetch it yourself at the post office, while “not delivering” means just that: you don’t get your mail delivered.
I’m in the same boat: Hollow Knight frustrated me so much that I never finished it, even though I really liked the lore and the world and the non-boss fights. Celeste on the other hand might be even “harder”, but as you respawn on every screen literally instantly, you can fail and retry hard parts a hundred times until you make it.