It may well have been that I've missed your point. Can you make your point a little clearer.

In the subject being discussed, the two actors are Patreon and far-right commentators. In the metaphor, presumably Murrow stands in for Patreon, and McCarthy stands in for contemporary far-right commentators.

What I presumed to be your point is that a commitment to pluralism, as manifested by Murrow giving McCarthy a platform, would be good because McCarthy would expose his whole ass on television and so be embarrassed out of public life. I took it to be the case that you were drawing the historical parallel because everyone knows how McCarthy's story ends and so people who want a similar ending for Carl Benjamin should take note.

But I don't understand the metaphor. McCarthy wasn't hoist by his own petard, he was deplatformed. That is to say that the thing that made him irrelevant was not the public becoming deeply convinced his ideas were wrong, but elites who gatekept his access to a public platform voluntarily deplatforming him. The Senate censured him. After the censure, no one worked with him in the Senate, or talked to him. The news stopped covering him, and the bureaucracy stopped returning his phone calls. He eventually went away because everyone ignored him. In the metaphor, if we want to learn from McCarthy how to make assholes go away today, the takeaway would be to deplatform them. I agree this is a valuable historical lesson.

If that was not the point, then I assumed perhaps a secondary point was that Murrow giving McCarthy a platform was good for a commitment to pluralism -- i.e. people should be able to be exposed to bad ideas, because a little poison makes your brain stronger. Accepting for a moment that this is true, I don't see the metaphor here either.

In a world where there are three primetime news options, each of those options has a powerful ability to give or remove a platform, and that's reflected in the Murrow story. Only Murrow could give him a platform. But today, that's not the case. It was not possible for McCarthy to start a TV station in the analogy. Today, all of these far-right people can easily (and do) start their own media outlets. First, there is a major cable network who will platform anyone on the right. Second, if they reject you for being too extreme, you can move to Breitbart or TheGatewayPundit or Infowars or really anywhere else. You can tweet on Gab.

It's closer to the scenario immediately after the revolutionary war. Many newspapers would not carry what they viewed seditious speech. When speakers could not write op-eds in contemporary newspapers, they simply started their own, problem solved. No one argued that it was a violation of Matthew Lyon's free speech that newspapers wouldn't run his "Adams Is A Tyrant" op-ed. He just started his own newspaper.

And no one would argue that printing companies had to sell him the press, nor did trading outposts have to carry his newspaper, nor did skilled typesetters have to work to typeset. Everyone could contractually choose not to do business with him. Luckily for him, enough people agreed that they would do business with him, and so he kept speaking.

If people think Patreon is really mean for denying Rhodes Scholar Milo Yiannopoulous a financial lifetime, they can come up with another way to give money. May I suggest the literally hundreds of cryptocurrencies, giving us more options than ever to pay? Don't like cryptocurrencies? Nothing stopping Brain Genius Carl Benjamin from taking money via the mail or finding a payment processor run by someone who agrees with him to take bank transfers

And then my other point was that in the metaphor, a journalist gave a platform to a US senator. Patreon isn't deplatforming US senators, and neither is anyone else. They're deplatforming extreme fringe people. Maybe you like Carl Benjamin, you do you, but the historical parallel isn't McCarthy, it's legitimately socially fringe figures, like George Lincoln Rockwell. I don't think anyone gave him an episode of TV.

So if the point of the metaphor isn't that "pluralism is good" and it isn't that "sunshine is the best disinfectant", and Patreon isn't a metaphor for Murrow, and McCarthy isn't a metaphor for Benjamin, then what exactly is the point? It's not clear to me.