Hmm no I am not saying that. The problem is that if they would meet offline they wouldnt be a group of 20.000 people or so in one room with the easy possibility to spread their worldview. Free speech is something valuable but beeing able to downstream information to thousand of people instant that easy is a problem. There is a difference between free speach and lying with intent to spread a certain world view.

Edit; As I said I’m a libertarian and a group of whatever people talking what ever where ever is totally fine with me but manipulating people with intent is not protected by the First Amendment And shouldn’t be confused with free speech