That’s the classical argument, but the last few years (and especially this last one) have pushed me away from that view for the following reasons:
1. Logical, evidence-based, well-reasoned arguments change people’s minds with depressing infrequency. Out of innumerable hours spent debating on “politics,” I literally can’t tell you a single instance where someone said that their mind was changed;
2. The Overton Window is unfortunately a real thing. The more dumb arguments are heard and shared, no matter how boneheaded, the bigger of a following they get and the more credibility they have;
3. Alternative platforms for hateful views exist and probably always will. But I think “quarantining” them to the greatest extent is best. Those looking for them will know where to find them, but casual users of the much larger and more appealing mainstream platforms won’t.
That is ultimately what the right-wing “free speech” war is about: legitimacy and reach. They know they have the Parlers and Gabs and Bitchutes and such, where they’re free to say almost anything they want, but they want to maintain access to the Twitters and Facebooks and YouTubes specifically.
But no private platform has an obligation to air the views of someone they don’t want to. That’s an aspect of free speech, too.