The points about how technology are used are sound, but here’s a couple of thoughts…
I would not want to manage a network of $350 consumer level laptops that I bought at Best Buy. I got one of those for my kid once and had to return it twice b/c of the cheapo electronics such as the wifi card kept crapping out. Chromebooks are a lot of things, but “unreliable” isn’t one of them.
Um, no you can’t run your school’s email system for under $100 a month. Not well and responsibly anyway. Not unless you don’t count the salary of the person who has to maintain it.
Use this: https://scratch.mit.edu/
and this: https://create.arduino.cc/
and this: http://iforge.genlrn.com
And you can do everything in Papert’s paper on a chromebook.
RPis are awesome, and schools should use them. They have more flexible software and the Linux OS. But add in the keyboard, mouse, screen, power adapter, and you start to get close to the Chromebook price or even higher. Don’t have the stats in front of me, but I doubt the processor power is better than most chromebooks.
Like with anything in our industry, the problem isn’t the “device.” It’s in how schools choose to use them. I think chromebooks were the answer to many districts’ prayers about how to deliver computerized, standardized tests. Many districts never pushed beyond that overly simple use. THAT is the real problem.