It's easy to blame all the flaws of human character on its most highly available and proximate expression which is speech. There is violence, anger, hatred, envy, all kinds of evils in the world, the world isn't perfect, man isn't perfect, and trying to control others' thoughts isn't going to change that. That would actually be regressing several hundreds years back to the Dark Ages. If your assumption is that banning free speech would improve things, I would say that is the idealistic fantasy. There's no proof that it would work or wouldn't have the same unintended consequences as before. The more these platforms push back against their users, the more they turn the public against them, the more opportunities they create to be disrupted. In a recent poll 3 out of 4 Americans said they were willing to die for free speech.