The backbone companies thing is the more important point you make imho, and is why discussion about what the modern public square really is and how the level of corporate dominance of media and the abuse of third-party doctrine allows the silencing of dissent. So a private company can censor whoever they want right?.. but how far does that go? First it starts with cloudflare, and then eventually it goes down to the ISP level... and that seems like a very dangerous slippery slope to me.