As absolutely not a lawyer, and acknowledging my huge ignorance I'd suggest that First Amendment processes are heard in court and protected by due process. Aren't they?

For good or ill, §230 bypasses court hearings and due process and so I wonder if it is

a) itself an unconstitutional denial of rights to the users, or

b) actually just fine legally, however an overturning of it would not necessarily be an assault on the First Amendment, only on this congressional shortcut

My "reform" of §230 would be to add on to this congressionally mandated shortcut with some form of due process to the users whose court rights have been bypassed -- if a site wants to use §230 protections, then they have to provide some form of due process to users, perhaps a timely takedown/suspension/banning appeals process, held in the open

If a site doesn't want to provide that, then they can avail themselves of the First Amendment and their §230 immunities are stripped and they are open to lawsuits.