Re: too much security
Really? So toys don't need to be secure? It's fine if someone records your kids whilst playing with the toys or just generally records your house? Or they use it to talk to your child when you're not around. All sounds great to me.
Now lets apply it to a robot, something that can actually move and interact with the world around it, class it as a toy or not, if someone gains control over that it could actually prove fatal should that person really be up to no good. "Hey 2 year old, follow me, your cute toy robot out in to the road".
Then there's having something insecure on your network and it acting as a jumping off point for other attacks etc. etc. etc.
Clearly you've not worked around IT for long if you think something doesn't need to be secure just because it isn't running a critical system.