There are quite a few countries which consistently score higher than the US on democracy, overall freedom and press freedom indices, despite not having these absolutist freedom of speech provisions in their constitutions (if they even have constitutions). Because it's not about the piece of paper or what's written on it, is it? It's about the society and what it allows their government to get away with. If the US ever becomes an authoritarian dictatorship, it'll have the exact same constitution and reverence for Founding Fathers, plus a few extra Supreme Court decisions.