This is the very sort of thing that led to the creation of common carrier status, with the tradeoffs involved. It seems to me to be the solution with ISPs and net neutrality, and there probably should be something similar with sites like Twitter (which is probably the point of Section 230).

I personally feel like moderation has gone way too far with social media, even though I'm far from politically conservative and definitely not a supporter of Trump. I think sites should lose some protected status if they start moderating excessively, as an incentive to moderate even less. Conversely, I think they should be granted a degree of immunity if they do.