> This shows that the limits of the first amendment are speech when its convenient. Links, webpages, and more are speech, but also completely censored in the US media.

For better or for worse, the US only has free speech protection which is binding on the government. Sometimes that's good (you can kick out people who don't behave). Sometimes that's bad (censored media). But even in the cases where it's bad, it's not clear to me that it would be worth it to enact freedom of speech laws that apply to private parties. It seems like the cure might be worse than the disease in that case.