I have some of the same concerns with the Frame. It is a stabdalone headset, but also just runs Steam games; it's not its own ecosystem like a Quest which has different versions for the headset vs what you stream from PC. But I haven't seen much hands-on stuff other than a physical hardware breakdown; never anything running on it.

Like, how well would it run Half-Life Alyx vs how well it might run something like Gorn? How is it gonna handle informing users what games would actually run well in standalone vs PCVR streaming?

I think the goal was 4K at 60 fps, but likely varying level of "detail" like you can probably do it with lower detailed settings rather than ultra or epic or what-have-you.

I mean the Steam deck can't max out most games, and it's been wildly successful.