At this point, Its a possibility. Maybe corporates don’t want humans to be intelligent enough to fight with AI like in Terminator. So they are making people forget coding and stuffs in the name of assisting and made us lazy to prevent AI ig.
You make a good point, however you need to remember that the power system, both power storage and motors, need to go somewhere.
I could easily argue that the power storage is just as critical a part as the central processing unit, but takes up a lot more space. So why not put the CPU in a hardened "head", and the battery pack in the torso?