The article stated that students wanted options of healthy meatless trays.
At any rate, I doubt this is politically motivated. Meat prices have gone through the roof and the schools are probably looking at ways they can save a few bucks. They won't say this is the reason though, not when there is a sanctimonious "saving the planet" bandwagon they can jump on.
Sanctimony and self-righteousness are the core of liberalism,
and these kids are steeped in it.