I think it is reflective of a new generation whose first computing experience was with phones and tablets. The idea that nothing of importance lives on the device is a huge paradigm shift, and I don't know that old folks are comfortable making the shift yet (I'm not entirely there, and, despite being middle aged, I like to think I'm way out front on the technology curve). The mention of Chromebooks in schools lends some credence to this notion.
Anyway, I think it's great. A Chromebook is so much more empowering than an iPad or tablet (which is what I think this is actually mostly replacing for folks, rather than high end laptops). A keyboard opens up the door to really building and creating, USB ports allow expansion, and Chrome OS is hackable in ways tablets are not.