I have one, it’s been great.

That said, “exactly what the problem is” isn’t always the same as telling you the solution. I had a “misfire on cyl #3” error or something like that, which can be a number of things. Replacing all the coils and plugs myself was probably still cheaper than taking it to the shop though!

poweroff and reboot work as advertised for me, but I’m running headless homelab servers and a laptop with i3. Maybe DEs/GUI shutdown is more subtle?

Yeah, I run i3 and headless servers, so it’s poweroff or reboot for me. Always works as advertised.

Except on the Linux systems I’ve used, when I ask it to shut down, it shuts down no matter what. Windows and macOS let programs stop the shutdown process indefinitely (when shutdown/reboot are invoked the usual way).

I think that’s what the meme is trying to get at.

Never said that at all. I’ve had some fantastic food in England.

Oh please. The US has many problems, and there are food deserts to be sure — but go to a first class US city and you’ll find great food.