Earlier quoted context omitted.
The problem is that "lawful content" includes things like explicit support for Nazism and the KKK (not 2020 "Trump is a Nazi" kind of allegations of Nazism, but actual Nazis). Even things like abstract calls for violence are protected under the First Amendment: https://en.m.wikipedia.org/wiki/Brandenburg_v._Ohio I don't think people espousing this view understand the scope of what sites need to tolerate to comply. Wo…
How might a democracy suffer if those who control the common venues for voter's political dialogue are given a monopoly over setting the bounds of acceptable speech?
As far as Reddit and Facebook go, understand that freedom of speech also means freedom from compelled speech. It's not just about being able to say what you want, it's about being able to not say the things you don't want to say. Making Section 230 contingent on hosting all legal content compels people so say a lot of things they don't want to say.