Maybe personal websites should be the "public square", not third party "social media" websites. Most folks probably won't bother with maintaining personal websites because they do not have anything meaningful to say. Instead, "social media" websites encourage all people, many of whom are only using these sites to communicate with friends and family, who otherwise have nothing worthwhile to say to the general public, to "share" their every thought. All in the name of exploiting these serfs/sharecroppers as ad targets for obscene profit. We have seen the results. It isn't pretty.
Just because "[y]ou can say whatever the fuck you want" to the entire web does not necessarily mean everyone will. At least, this is how I remember the web before so-called "tech" companies and "social media" hijacked it. The social media websites are desperate for others to create content for them, for free.