Something I have seen from some people who have bought the steam machine inspite of it's price is that they want a Linux gaming machine but are afraid to have to touch the console and look up scripts. They essentially want Linux with official support and a seem less experience.
I've told people that this is fubar and you can just install Mint or Zorin on any machine, but I guess people are willing to pay a premium to escape windows. That, and afraid of touching computers. I had this 23 yr old kid at work pay me $80 to replace his 1050ti with a 9060. He bought the card but was just afraid to install it
Mint (and many if not all Debian based binaries) of Steam are currently broken. Never tried VR on Zorin, but due to the way I push my hardware Ive always needed something like CachyOS anyway. Most people now only keep a PC for gaming, anyway