it should automatically shut down after applying the updates
Okay, that part it does for me though. That's extra annoying for you then.
apply everything that is possible, then restart and apply the remainder
Yeah on one hand I get the concept, on the other macOS and Linux manage without, and I don't really remember older Windows doing this either, so I wonder if there is a real reason why it's needed, or they just engineered themselves into a bad corner...
Ah I found some more info from the Frankfurter Allgemeine Zeitung:
It says he didn't realize that his ESTA authorization (which you can use for multiple visits, but is only valid for two years) had lost validity.
Source link: https://www.faz.net/aktuell/gesellschaft/menschen/tiktok-superstar-khaby-lame-nach-festnahme-aus-usa-ausgereist-110525932.html