I feel like folks are antsy, because it doesn't look revolutionarily different from the original Steam Machines, which flopped back then.
But yeah, there actually is a revolutionary difference, which is that the vast majority of games now do run on the new Steam Machines. This has also already been proven to the public with the Steam Deck.

And I do think there is a market of folks looking at a Steam Deck and thinking they don't need it to be a handheld and would rather have more bang for their buck.

I guess, we will have to see, but I could also imagine the cornered memory market playing into the hands of the Steam Machine, as the better memory efficiency of Linux will let you do more for less.