Also: a quite effective assault at climate action using misinformation, violent riots, a movement campaigning for civil war, ridiculous medical advise by the US president leading to deaths during a pandemic, etc.
This all happened and permanently changed the debate. Free speech is poisoned these days and we can't simply ignore that.
Even if that is the case, it shouldn’t mean we give up on free speech and allow it to be effectively eliminated “so it can be saved”. Free speech with some censorship is just censorship.
A robust public debate is how ideas are fairly brought out and given an opportunity to thrive or die. Having Twitter or a government or “fact checker” or any other person/organization in the middle adding their outsized influence to the picture brings the whole debate out of balance. Why is Jack’s voice worth 1000x more than yours? Because he’s more “enlightened”?