Steam Deck is fantastic to use. Good riddance to Windows.
The Windows Store and its apps were so bad that Microsoft eventually scaled back their ambitions, but Valve has not forgotten.
2012: https://www.pcgamer.com/gabe-newell-i-think-windows-8-is-a-c...
This could have pushed Steam out of the market if it had succeeded. Valve then spent the next decade building up Linux gaming almost from scratch to reduce their dependance on Microsoft.