Before, children only had to pay for food. If they don't or can't pay, we starve them, that'll teach them.
But now, they also have to pay for this system, and its potential life long consequences.
Like, suppose we offer it to the cheapest contractor, which delivers a crappy insecure system. So somebody "hacks" it and leaks videos of children eating (just because it uploaded all footage to facebook and shared it does not meant we wanted anyone to watch it!).
This allows insurance companies to analyze the data and either charge premiums or just deny health insurance to these children as they become adults because "You had too much sugar as a kid Tommy, here, look, this is footage of you eating 30 years ago!".
So you see, this system is genius and the possibilities are endless. Why can't you get it?
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In case it isn't clear, this is sarcasm, and I hope that whoever decided that filming children during lunch using facial recognition, and everyone who approved it, to be able to charge children for food, get fired and shamed for life.