Yes, we need to keep humans accountable.
No, that is not the X factor problem. If I make an AI capable of self-sustainment on the internet you can take me out and kill me and it won't do a damned bit of good for the damage it will keep doing long after I am gone.
This is why governments tend to smack down any actions they find that can have long term uses as weapons.
I'm really surprised nobody has done that yet. With how cheap AI is to run these days it would only need to make a small amount of money (e.g. through hacking).
Someone should set one up with the long term goal of getting egg on LeCun's face.