Reboot isn't as security-sensitive as kill. With kill you can knock off the nfsd process and bind to port 2049 yourself, for example. Reboot is only good for a rather coarse-grained denial of service. Pi is quite misunderstood at times. Pi are round.
Cakes are square.
I have a theory about gravity. One that I sure will die a merciful death once I learn the answer to my question. You're in the right place to ask sensible questions to which those in the know will happily respond without putting you down. What is past is prologue. Time is nature's way of keeping everything from happening at once.