Point being that OP must’ve installed Windows before and therefore should be able to build a computer hardware-wise?

Absolutely. Anything can be learned and unless things build on top of each other you can’t really compare difficulties.

What downsides though right? “We” object to Ubuntu over matters like Canonical being a for-profit company or their choice of Desktop Environment. At the end of the day, who cares? If it works it works, right?

It’s an interesting angle, the hostility thing. People in the know have largely fallen out of love with Ubuntu but imho that’s not necessarily because Ubuntu fell in quality but just because so many “better” things have come up since Ubuntu 04.10. It is definitely a sound choice for non-techy people, maybe more than ever. Personally I’d prefer (almost) any contemporary desktop over Gnome these days, but I can definitely see the appeal for others in terms of simple design language.

Basically you can turn any old laptop into a Chromebook these days using Linux, and most people just like your parents most definitely do not need more than a functional webbrowser. Basically a smartphone with a larger screen and physical keyboard. Even if you don’t care about your privacy (or freedom from notification-spam) why still pay the Microsoft-tax.

Which are about as related as the knowledge required to mount drywall and the knowledge required to run a ham radio station. You tell me which is more complicated but either way there are most certainly radio amateurs out there that don’t know the first thing about handywork and handymen that could barely find the on-off switch on a broadcast-rig.

Yes @upriver4458@sh.itjust.works please save yourself dozens of future headaches by listening to this person.

oftentimes (and this is more of a general statement) throwing into google exactly what you would otherwise type into your shell of choice should get you on the right track, ie searching for “man systemctl”

as far as the inability to reboot goes, if a regular sudo reboot can’t bring the machine back up either then this is probably a hardware issue outside the sphere of the operating system’s influence. can’t say I experienced something like that myself. I guess the closest I witnessed would be a computer that when rebooted with an old USB-Keyboard plugged in just refused to get past the POST screen. The keyboard worked fine if plugged in later, but the computer couldn’t reliably get through the boot process with the thing present. Maybe there’s a similar variable to your setup.