I certainly think the schools in question shouldn't have made the lunchbreak changes, but bringing fish and chips because your little precious likes a hot meal is insane, and it just seems to me like weak parenting giving into sulky teens.
I think if I were a parent unhappy with the school's catering service, i'd probably send the kiddiwinks in with a sandwich and a relatively healthy snack. Fetching them fast food everyday is absolutely terrible. And bloody pricey compared to a decent enough packed lunch.