XDA Developers on MSN

I stopped using my Steam Deck as just a handheld after discovering desktop mode

You're leaving a major feature on the table.
Ars Technica

Full-screen Xbox handheld UI is coming to all Windows PCs “starting next year”

Why is nobody afraid of being locked-in to SteamOS? Does SteamOS allow you to play PC games purchased outside of Steam? Click to expand... Yes. Fundamentally, it's just a modified version of Arch ...
GamingOnLinux

SteamOS 3.8.6 Beta brings expanded handheld support, initial HDMI VRR for devices with native HDMI output

SteamOS 3.8.6 Beta is out now for testing, with some exciting additions for anyone wanting to see improved hardware support.
The Verge

Today I learned the Steam Deck lets you go Inception on its desktop mode.

Why reboot your whole SteamOS handheld to desktop when you can visit the desktop from inside the gaming mode? Nested Desktop does have limitations (no file management, no Steam-within-Steam) but gosh ...