We’re in an obesity epidemic and most people don’t know how to cook even very basic meals.
Make space for it, squish other classes if you need. Make it mandatory, everyone has to take it. Maybe even ongoing through multiple grades.
Edit: Rice, beans, and even basic meats are cheap. To eat healthy you don’t need your meal to be 100% Bell peppers and tomatoes.
People just like complaining. Guaranteed if we taught taxes to high schoolers they’d complain that it’s one of the more boring required classes like government and econ. Kids already hate reading assignments and math enough without taxes involved.