The games are rarely the issue. It’s the OS in between the games, switching between games on Steam Big Picture and then to Jellyfin or similar for media, a web browser, and so on. You can do it with a wireless mouse or trackpad, but it’s a bit of a pain. SteamOS will presumably have a better UI for that.

The point is to allow more concise representation of problems that don’t include words. If you’re willing to be arbitrarily verbose, you can just add enough parentheses that you don’t need the other five letters.