This is quite a few years old now, but I think the main points are still valid. As you said, everything is so polished, kids don’t need to figure out how it works.
http://www.coding2learn.org/blog/2013/07/29/kids-cant-use-computers/
I’m really curious what the difference could be between a $4 handle and a $60 handle, other than just greed.
Ice dispenser.