There are plenty of supposed Steam Deck killers available in the portable gaming space, from the Asus ROG Ally to the Lenovo Legion Go and all the Ayaneo and ONEXPLAYER devices in between. But none of them have managed to outright slay the dragon that is the mighty Steam Deck yet.
The Steam Deck is the full package that not only integrates the hardware and software, but is also an open system. Slapping a some inputs together onto a windows PC just isn’t the same thing.
Bingo, I saw an ROG Ally(?) on display at Best Buy the other day and it was sitting on the Windows 11 desktop with a couple applications open like any demo laptop out on the floor - what dumbstruck me is that the scaling was set so the interface was absolutely tiny. Of course someone could have messed with DPI settings but it just looked like an interface for ants!
Windows 8 or 10’s tablet mode would have probably gone a ways towards making it more suited for a handheld but that function is gone.
At least the bottom edge swipe opens the start menu which I found by mistake. Maybe Big Picture mode would help.