Not quite useless. POST tells the server to check for a body which I think is a reasonable indication of intent. But otherwise, yes, it’s all arbitrary and just vague hints to the server program as to what you might possibly be thinking of doing…
Can verify this having been woken up more than once by a -very- attention getting earthquake alarm on my or my employer’s iPhone. A contender for Most Shock and Awe in a single notification.
I’ve undertaken information security training in a number of Japanese companies. They all had what I thought was a disproportionate weighting on the “blind drunk salaryman falls asleep on a train and leaves behind a laptop, mobile phone, USB stick etc.” scenario.
!!Con 2015 - Kevin Lynagh: I made a cell phone! (DON'T TELL THE FCC KTHX!)
https://youtu.be/FlRa-iH7PGw?si=8OlGBQNcQRo_biuU