Can you actually use steamdeck as a desktop PC though?

Depends on how many pixels you “need”. Running high resolution monitors, even for basic stuff can get costly performance wise pretty damn quick, but in my opinion that isn’t really asking the same question as whether the Steam Deck can be a good desktop.

You can absolutely use the Steam Deck as a desktop, I frequently use my Steam Deck in desktop mode… using the onboard controls. The only real limitation of the Steam Deck so long as you don’t expect it to be a top of the line gaming pc, is that most people who buy it are never truly going to be able to give anything else other than a mouse and keyboard an honest go, they are too impatient and won’t believe it can work but the sky is the limit for joystick+gyro input (our touchpad + gyro) for computers/gaming.