Proper school nutrition must be complemented by activities outside of the cafeteria. The decisions parents make to keep their kids healthy are critical in fighting this battle on the home front.
Normal people have an incredible lack of empathy. They have good emotional empathy but they don't have much empathy for the autistic kid who is screaming at the baseball game because he can't stand the sensory overload. Or the autistic kid having a meltdown in the school cafeteria because there's too much stimulation.
When I was in high school I used to sit by myself in the cafeteria - not necessarily by choice - but I thought it was funny to talk to people that weren't there.
A society that thinks the choice between ways of living is just a choice between equally eligible 'lifestyles' turns universities into academic cafeterias offering junk food for the mind.