Meh, I'm not talking about data that isn't already public to begin with, but being skittish about your information at this point in time is a bit too late, especially if you're using the inter nate

I've been using the internet for a quarter century. I am aware that it's possible to track the origin and destination Ip addresses of my data packets: that public information I have no problem about sharing, any more than I do the postal addresses of letters I send and receive.

You're talking about people carrying devices that constants sends not only location and usage information to arbitrary observers (call them servers if you want, a rose by any other name will smell as sweet) and additionally usually provides visual and audio surveillance hardware, and as you said, cam be used for mandatory monitoring of activities.

If you have homework being gamified and monitored, and physical activities being gamified and monitored, that's a whole other level of Big Brother from just sending data packets over a highly connected public network.