The idea would be that new games would be compiled natively.
They won’t even compile games for Linux as it is, and a lot of the ports we do get are awful ones that run significantly worse than the Windows versions do through Proton, so expecting publishers to start putting all their PC games on a different architecture entirely, just for the sake of handhelds like this, is completely unrealistic
Stuff like Proton (which isn’t emulation in the sense that this would be) has already struggled so much with compatibility over the years to get to where it is now, adding an entire x86 emulation layer on top of that would set things back so far and it would even more of an uphill battle to recover from
If the goal is to run enough current games well enough, then AMD chips are still doing fine at that, and upcoming generations will likely go a long way to improving that