The openness (full arch desktop) of the Steam Deck is also awesome while having a great UI that you never have to leave if you don't want to.
EDIT: I mistakenly called it "fedora desktop", my bad
They use that awareness and take advantage of simpler graphics to trade off processing power for features (portability, novelty) and profit (60>=usd games).
From time to time they also remind us that little hardware can do a lot if it's not running Chrome on a trench coat, and instead care is put in optimising things.
Now Steam deck easily competes on fun with Nintendo, because a lot of people have massive decades old steam libraries and constant supply of newest and greatest indie games, and quite a lot of power to play fairly modern titles.
This is hard to compete with because Nintendo likes you to pay for games you've already bought on their platform in past, including old NES and SNES roms (which are super embarassing to ask money for imo).
The only drawback of Steam Deck is that it's a fairly big and bulky.
Buying Switch 2 just for a odd once in every 5 years exclusive Zelda game is a pretty hard sell.