You're mixing your definitions of authoritarian, there's authoritarian in the 'Nolan chart' sense of the word, which just means 'not a Libertarian', which is like 98% of people, which is different to the Hitler meaning of authoritarian, which means 'rejecting democracy'. If the people agree to ban things they don't like, that's democracy, so it's the Nolan kind of authoritarian but not the Hitler kind of authoritarian. Deciding the people shouldn't be allowed to agree collectively to ban certain things is rejecting democracy, so it's Hitler authoritarian but not Nolan authoritarian.