Or it's the thing that I'm already looking at, in my hand, but I need it for a separate function so my brain defaults to treating it like a separate object
Only if the phone hardware is closed and locked. If not for chip manufacturer patents, stock Debian would run no problem on every new phone a week or two after it hit the shelves (if not sooner, like when friendly vendors send early hardware out to developers).Instead, every revision of every model phone has a bunch of unique black-box bullshit that must be reverse-engineered, all of which expressly exists to keep you from using your hardware the way you want.
You know all of this.The point (that you made, that) I want to emphasize is: Valve is a hardware manufacturer now.And I would absolutely buy an AARCH64 Steam Deck that could replace my Android.
Zellij is very cool, and is the only multiplexer in which I've gotten multiuser multicursor working.