Yes, I reference Android client attestation in my comments in this thread frequently. I actually see this company as likely to be the flip side of the “bad” client attestation coin; server attestation actually provides a lot of nice properties to end users and providers who wish to provide secure solutions with very limited user downside.
I don’t see anyone investing in this for general purpose desktop Linux in the state desktop Linux exists today; the harbinger of the Desktop Linux Apocalypse would be web-based Windows attestation (just as Android attestation is eroding alt-OSes) which feels like a viable “threat” but thankfully doesn’t seem to be happening just yet.
I do think this approach might get used for client attestation in gaming, which I actually don’t mind; renting/non-owning a client that lets me play against non cheaters is a pretty good gaming outcome, and needing a secure configuration to run games seems like a fine trade for me (vs for example needing a secure desktop configuration to access my bank, which would be irksome).
It won't remain "server" attestation. It will become "client" attestation, with the end result that you won't own your own machine anymore, you'll just be paying for a client device upon which you won't control the hardware or software anymore. See any mobile phone at all, anymore.