Yes there is: Paradox of tolerance - Wikipedia. Fascist speech is fascist recruitment using lies. If you tolerate intolerant speech, soon you will no longer have tolerance. So if you want tolerance you must not tolerate speech that is meant to increase intolerance.
In principle nothing bad about presenting both sides. But he definitely needs to be more specific on what that means exactly.
Yes there is: Paradox of tolerance - Wikipedia. Fascist speech is fascist recruitment using lies. If you tolerate intolerant speech, soon you will no longer have tolerance. So if you want tolerance you must not tolerate speech that is meant to increase intolerance.
What it will mean in practice is that every objective fact has to be balanced with a right wing talking point.
This isn’t about objective facts. Obviously, there is no sides about that. This is about “sides” aka arguments in discussions.