I think perhaps your comment was misunderstood (hence the downvotes), but I think it was a fair take. If a company wants to engage in arbitrary (and especially partisan) censorship then they should not be afforded safe harbor. Why should safe harbor be granted to a company which allows hate speech from one group, but actively censors identical speech from another group? By doing so they create an actively hostile atmosphere toward one group or another, and they are no longer "simple carriers", but active participants.