I can't speak for Stadia but Steam have been shipping open source projects like Proton and pushing Vulkan. If anything, Stadia will increase pressure on Steam to keep improving desktop Linux compatibility.

Valve has contributed a tremendous amount of open source work in order make Linux an even remotely viable gaming platform. I'm actually pretty impressed at how well they've done.

A Stadia lock-is is preferable to a Windows lock-in since there's no reason for Stadia to not run on Linux.

Stadia uses Linux and Vulkan so games ported to run on Stadia should work on the Linux desktop too.

I'm responding to the mention of Stadia, but I'm not sure what this has to do with Lenovo.