That these are banned but Chinese made robot vacuums and other appliances are not points to this not being about protecting individual Americans and more about protecting national interests (drones can map out terrain in a lot more detail and are mobile outside of your bedroom, and can be trivially weaponized)
My Chinese made robot vaccuum can't get from one end of a room to the other without bouncing off the walls multiple times. Makes it kind of hard to deliver ordinance like that. I really don't think these Chinese made robot vacuums you're afraid of are much of a threat.