That common argument rests on norms established by millennia of relatively difficult communication. Best not to assume that the same people would come to the same conclusions today.
For example, QAnon believers have not had their speech restricted. That conspiracy theory is as open as anything you could name. People have challenged it. It's still going.
If you believe that challenging terrible ideas makes those who hold them think twice... why hasn't the exact argument you're using gotten rid of the terrible idea that we should restrict speech? Answer: because logical refutation doesn't work.
I am not arguing against the slippery slope. This is a very, very hard and risky problem. I am refuting the misconception that shedding light on bad ideas makes them go away.
For example, QAnon believers have not had their speech restricted. That conspiracy theory is as open as anything you could name. People have challenged it. It's still going.
If you believe that challenging terrible ideas makes those who hold them think twice... why hasn't the exact argument you're using gotten rid of the terrible idea that we should restrict speech? Answer: because logical refutation doesn't work.
I am not arguing against the slippery slope. This is a very, very hard and risky problem. I am refuting the misconception that shedding light on bad ideas makes them go away.