I thought his point wasn't about stopping people from expressing their opinions, but to do so in a civil and constructive manner.
There is a lot of toxic behavior...and there is a lot of entitled behavior. So you get a lot of insults/belittling and you get a lot of my opinion is right because it's my opinion and I don't have to provide reasoning, just agree with me.
Pretty sure I'm innocent of the former...I hope I don't do the latter.