I read all across the communities, that people use sentry robots for some routes and ghouls for others. Or a Mr. Handy for spectacle island.

Provisioners can ONLY die by your hand afaik and according to the wiki. Is this an 'RPG' thing, or is there an actual reason to send in robots as provisioners? I don't care if my provisioner gets knocked down every 5 seconds, as long as I have my junk and mods available over all my settlements.