Nah. This is running a Snapdragon 865 SOC with an older Adreno GPU. If you think Windows on ARM gaming is a struggle this isn't going to be your Linux handheld killer. There's also no reason for it to be, the Steam Deck already exists.
For its intended use case as a retro handheld (or an Android gaming handheld, I suppose), this seems like it'll be fine, but I'm also less excited about these mid-tier ARM handhelds now that we have good x64 alternatives with decent battery life and better performance that aren't much more expensive. I still think the cheap, tiny ones are cool, though.
I guess this is nominally cool because other comparables like they Ayn Odin 2, need a bunch of tinkering to run Linux, but beyond that it seems Linux is well represented on both extremes around this awkward middle ground of more expensive ARM handhelds.