5/ My kids' school gives them Chromebooks. While a Chromebook isn't necessarily locked down in the way the iPad is, it can be configured to be, and the schools do. My kids know ChromeOS has a fully-functional Linux environment, but are prohibited from accessing it. They know there are ssh apps, Git apps, etc., but they can't access them, either.
Most kids don't know this.
In an era where we go on and on about the importance of #coding and #STEM, we teach kids to be feeble consumers.