Linux has decimated Windows in the server market. It would be unthinkable for a new project to use Windows server, even Azure assumes you want to use Linux.
There are lots of industrial applications where open source has dominated the market. As the end user you might not see it, but almost all software and digital infrastructure you use has open source components.
You’re much more likely to just restart than to shutdown and need to hit the power button. I don’t think I’ve shutdown my MacBook since I turned it on, or my Linux box either. IMO unless there’s a power outage you’ll never need to hit that button. Still dumb though but i can’t imagine this as a deal breaker.
$599 for this thing is an insane deal.