I am kinda confused, facebook was criticized for not weeding out "fake news" (same for twitter/ Instagram not controlling trolling/hate speech), and Cloudflare is criticized for not being content neutral... damned if you do, damned if you don't
I expect the electric company to provide electricity to everyone on a non-discriminatory basis. I don't expect publishers to print everything that gets submitted to them.
Real-world concepts of common carriers are centered around the concept of natural monopolies arising from local effects. That does not take networking effects into account which can work non-locally.