I saw that happen once in a big presentation.
There was a team of students presenting their work to ~200 people. Right in the middle, a pop-up says updates are finished and the computer needs to restart. It has a helpful 60-second countdown, but “cancel” is grayed out, so all they can do is watch.
I was only in the audience and I still have nightmares.
Then it proceeds to take 10 minutes to boot. Happened to me before an important meeting once and i just couldn’t believe it. wtf makes Microsoft think they can get away with shit like this?
“Don’t turn off” is the worst kind of status message.
When it eventually hangs for various reasons, you actually do need to turn off your pc for it to complete or to let it roll back in an error state.
When “just hang in there” is still present on the third day you’ll start wondering why you bought that piece of furniture and won’t mind the consequences of turning it off.