That would still be processed food. Ultra processed foods have additives like preservatives, coloring, and flavoring that you can’t typically buy off the shelf on their own. Frying is just another way to cook food, doesn’t make it organic or healthy.
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.