Whatever happened to the idea that the best way to combat speech is with speech? Yet the "bastion of free speech" Reddit feels it must shut down various communi

Whatever happened to the idea that the best way to combat speech is with speech? Yet the "bastion of free speech" Reddit feels it must shut down various communities, probably just sending them elsewhere. Society could benefit from the conversation between those who say unapproved things and those who disapprove of them.