I believe that the debate around Section 230 is a sign of the growing consensus among the ruling class that Project Internet is complete, that it's successfully deployed a world wide surveillance framework, and that no further growth for the sake of the growth, which could destabilize the said framework, is needed, and thus it's time to close the gates and fortify the site from competitors. One fact supporting this stance is the rapidly growing popularity of the so called "end-to-end encryption" idea, that could crack the foundation of surveillance, unless hard measures are taken right now.