You should ignore the children. Their reddit addiction is getting to them and no matter how you explain it, they will just keep having tunnel vision.
I don't think there is any difference between Restricted and Private. Both are achieving the same thing for the current purpose (zero activity), so adding those 2 up makes sense. If no one can see that, then it's best to not waste time in trying to explain it to them.
This might be my first zebra. Been wanting to get one just for practical use (efficiency and durability).