There’s enterprise support for several Linux distributions like
https://www.suse.com/services/premium/ (and SEL is a thing) or
https://ubuntu.com/support
Whether those distros meet the demands is a different animal.

…and failed to save anything at all.

You expect Nazis and their sympathizers to have a brain and form coherent sentences, huh?
I fear, there are at least some who do and those are even more dangerous than the typical braindead Nazi.

Looks nice and I’d like it even more, had it an USB-C port with display output.
But even in the current configuration it’s a nice gadget at a reasonable price point.
4 GB RAM is not exactly great for a kind of desktop computer (even with Linux), but using this thing as a server with a built-in keyboard and display would have saved me some trouble I faced with unresponsive RaspberryPis.

So, how do you know?

You’re adding to the confusion.
kWh (as in kW*h) and not kW/h is for measurement of energy.
Watt is for measurement of power.