No, I don't believe so. Any individual can easily create a website and publish whatever they like. It costs maybe $100/year and takes a couple of hours for an inexperienced user to set up a Wordpress blog with manually-moderated comments. Nobody's speech would be censored if Section 230 were repealed.

Instead, platforms would be treated as though they had consciously decided to publish every publically-available comment/file upload/post/etc. That would probably mean manually moderating everything, and rejecting a lot of it for capricious reasons.

But honestly, I am not convinced that that would be a bad thing. It would certainly encourage more people to create their own publishing mediums, and it might help break up the titanic oligarchs that currently occupy the market.

Put it this way: I would happily give up sites like HN to remove the business model that makes mass-scale social media viable. Sites like Twitter and Facebook have inflicted unconscionable harm on our collective humanity, and they have demonstrated a complete inability to self-regulate.