It’s not the gotcha that they think it is. Increasing share of Linux, steam deck or not is progress. Any development or considerations made for the SteamDeck and its Arch based OS benefit the non SteamDeck Linux gaming scene too.
Mostly a stab at Reddit PCMR, Lemmy PCMR has a different vibe.
It’s surprisingly straightforward! There’s a menu option in the UI that can switch you to desktop mode, which is KDE Plasma. You can open up a terminal emulator from the K menu there.