The trick itself isn't very shitty, but some of the mentality is: "Our team obsessed with finding ways to get individual high schools to adopt a product simultaneously." Seriously? getting a bunch of kids to adopt a product is what you want to obsess about? How about helping companies make a product that's not shit so you don't have to trick kids into using it.
To be fair, all the toys/consoles have been similarly marketed to a bunch of kids (for example during after school hours) for a long time without anyone getting pissed off. It's just marketing. This doesn't really seem like a "psychological" trick to me.
Apps are marketed and given away for free to collect data on how to influence children. In many cases they're designed to be habit forming or addicting.