I just finished watching the first two episodes and thought it was excellent. It's been a while since a show hooked me from the very start.
Episode 2 theory
After finishing episode 2, I now have a theory on where this is going. When the hivemind says that it can't hurt anything, I think they mean it literally. They are not allowed to hurt any living thing and are completely docile.
The reason they have a seizure when shouted it is that they want to hurt Carol back but aren't allowed to, so they deadlock. They also seem to do 100% of everything they're told to do. Nobody noticed this yet in the show but potentially this could mean someone could order around everybody on earth to try and rule it, which could be wild. Curious to see where this goes and whether I'm right.