More particularly, they are statutorily shielded from civil liability for content on their websites because they are considered a “platform” as opposed to a “publisher”. They can make a choice: accept liability for any illegal content on their site, or allow all legal content on their site. They cannot have it both ways.
That is interesting. A statute cannot alter freedom of speech. I know the statute you refer to and it removes them from “liability” for anything placed on their platform. It does not allow them to discriminate . Your point is well taken. What hat do they want to wear? But note carefully the exact language of the 1st Amendment “ Congress shall make NO law abridging the freedom of speech... “ “No “ means no law!!