The problem with that is that bad faith actors engage in bad faith arguments for a reason. They just want a few people to hear them. It doesn't matter that the majority of people who hear them see through their lies. It matters that they reach that small audience. To let that small audience know they're not alone. The goal is to activate, engage, and coalesce that small audience. This is what the alt-right does. This is what they've done since the 1920s. We have 100 years of evidence that you can't just "Hear out" the Nazis' opinions without harm coming to real, legitimate people. The best way to deal with bad faith actors is to deplatform them before they've achieved a platform

A viewpoint being controversial isn't enough of a reason to dismiss or deplatform it. A viewpoint being completely unsupported (by more than other opinions), especially one that makes broad, unfalsifiable claims is worth dismissing or deplatforming.

Disinformation and "fake news" aren't legitimate viewpoints, even if some people think they are. If your view is provably false or if your view is directly damaging to others and unfalsifiable, it's not being suppressed for being controversial, it's being suppressed for being wrong and/or dangerous.

No thanks. There are too many delusional morons that hear it and like it. Society has heard it far more than once and instead of being dismissed immediately idiots are trying to make white supremacist robots repeat it.