The cynical in me doesnt see that as the main problem, lack of diversity in thought and debate is already an issue, censorship laws about what subjects and what opinions are correct is an issue that will be exacerbated.
To save the democracies you need, a better population who votes in competently and informed, as well as a public debate that is honest and doesnt decry any deviation from the standard as fascism.
Far-right populism only exists in coutries where debate is not honest and pragmatic enough, and avoided in countries like Denmark because population and government are in a tight loop where each feels heard by the other.
You can only have a democracy when the vote actually matters. In a representative democracy where representatives are not held accountable to their campaign promises that can hardly be said to be the case.
