There have always been limitations on free speech, especially when it presents a danger to others. That’s exactly what the talking heads are doing, and their speech absolutely should be limited.
But as with so many harmful things, we humans tend to only be good at reacting to immediate threats while ignoring those that kill us slowly. Think dietary decisions.
If you call for violence, you get in trouble, but if you spend months pushing propaganda meant to inspire violence, you get away with it. We’ve got to recognize the cumulative effects are the same and react accordingly.