The actual term is ultra processed. Anything that requires industrial level machinery to make or industrial ingredients are ultra processed.
This podcast episode goes into great detail about the subject. https://youtu.be/eNOi66OclA4?si=XDtfu-NhhfYLlThx
Well hate speech is free speech too. Schools don’t want to foster that behavior and so they can make and enforce policies to create the learning environment that they want. Also your argument works for bringing guns into schools too. The second amendment is above those school policies too.