The stained glasses these are supposed to replace are from 1850. They are also approved by the French Catholic Church. The actual discussion in France is about

The stained glasses these are supposed to replace are from 1850. They are also approved by the French Catholic Church. The actual discussion in France is about the legitimacy of replacing intact windows even if pretty much everyone agree that the Viollet-le-Duc ones are completely uninteresting. No one is actually against the new glasses per se if it would have been a non story if they were put in place in place of destroyed glasses.