I believe in safe harbor for carriers, but not for promoters.
For me, the question of whether the platform is promoting/suggesting the content matters.
The interest of free speech is wholly satisfied by the content being carried and made accessible to those who already know how to find it. A company that provides advertising/awareness to new viewers is materially contributing to the enterprise and should be held accountable for that support/association.
Twitter and many other platforms with algo-feeds provide this support by default and could/should be held accountable for it, which is likely why they decided to drop Infowars rather than reengineer their entire product. Amplifying a message matters, and a company that goes beyond mere hosting should face the consequences of associating themselves with the content (note: this includes user-generated content suggested by YouTube).
