I’ve had it happen three times in the last ~1 year each time killing some running process that I kept my pc on for. IIRC it were robocopy backups twice and once during deep sky photography.
I get why they force updates, but resarting is a bit too much for me. Although I understand why they do it, there’s so many people just never shutting their systems down and Windows apparently just needs to reboot a lot for updates.
If you haven’t noticed it on your machines, it probably is because you keep them updated and restart them regularly (or disabled the “feature” somewhere).