Nope it is the ROG Ally : better design and form factor, better autonomy (OLED is fine but need more power), cheaper, better desktop solution (you can print), Xbox pass.
As usual dishonest people will down vote.
Absolutely I own 2 actually and still use them with original disks.
Solide desktop solution without any printer drivers. Stop to feed steam, there are better solutions for retro gaming.
There are cheaper and better options like Evercade or Retroid.
Really look around it’s more and more like X.
Every serious battery life test will teach you that the ROG is the winner. I bough a brand new ROG for 350 bucks. Good luck to get a better price for a steamdeck. For the weight my ROG : 608g / Steamdeck : 669g.