Democracy and authoritarianism are both forms of government, and that is the sense of the words being used in the sentence ("Current government models, democratic and authoritarian alike, …"). You've chosen to reinterpret one of them as an adjective unconnected to the thing it describes (government models) and then criticized the parent for a category error.
Those aren't opposites, they are entirely different concepts. Any law that mandates behavior is authoritarian, which is not inherently good or bad. Are democracies incapable of producing such laws? Criminalizing murder is authoritarian, for example, but unobjectionably desirable. Freedom of speech is actively anti-authoritarian, as an alternative, as it is a restriction placed on the state.