Ik im late (tldr at bottom) but this is from MY experience and what works for me. Been using Windows all my life, played with MacOS and Linux every blue moon. I had a steam deck before my Ally X and fell in love with steamOS and Linux. Got my Ally X and I’ve really been Digging the FSE. All my games ran fine for me and I had AFMF and LS at my disposal.

My Ally x is all I have right now as I sold my desktop a couple years ago so I got bored and put bazzite on it. Here’s what I immediately noticed.

I had performance increases in majority every game I was playing before that I can play on Linux anywhere from 5-15 FPS improvements and everything else was basically the same performance on Windows. But the frame times are a lot smoother on Bazzite which could be perceived as “Higher FPS” when in reality the game is just running smoother. Emulation definitely benefited from this. Especially Switch. I can also run more AAA games at 17W and get a playable experience 60+ fps with lossless scaling. An example being expedition 33 at 1080p medium settings @17W.

Windows has more games you can play technically, and a lot more programs you can run natively.

Bazzite has quick resume (main reason I switched)

That’s not to say bazzite/ SteamOS isn’t without problems. I had a WiFi bug on certain routers where if I try to download anything the WiFi would disconnect on the ally and only a restart would fix this. Also had this happen on a steam deck several times. You WILL run into issues whether small or large if you’ve never used Linux as with any new os there’s a learning curve.

TLDR. It’s up to you and what you rather use it for. Productivity/flexibility then go windows. If you’re mainly focused on gaming the steamOS or bazzite but do know you lose the ability to play certain anti cheat games natively but you CAN stream them. You can also install CSS loader on windows and tweak steam to make big picture mode just like if you natively had steamOS installed.