Doesn’t SteamOS satisfy that requirement? What do you dislike about it?

Steam Deck is just a computer. You can install any other Linux distro. Or Windows, if you are into that. I wouldn’t recommend anything other than SteamOS, though.

That’s very unfortunate. However, I’d like mention a few things about attempting a self-repair:

• You don’t need a heat gun to disassemble it. A simple Philips head screwdriver will do.
• Batteries are dangerous regardless of their charge. You should be careful handling them even when they are fully discharged.

This is misinformation since both operating systems can gracefully and forcibly shut down processes.

What?