When? When Congress gave them protection as a neutral carrier, not as an editor/publisher. When they decide to censor content, especially political speech, they became a publisher. And like a newspaper, they must now be responsible for every word they publish.
They need to be open to content based litigation.
Is your “conservative” opinion that they should be granted special legal protection not available to all other broadcasters and publishers?
Congress did that to allow platforms to delete obscene material, mainly pornography. Are you really seeking to undo that - and force websites to allow porn? How conservative of you.
Is your “conservative” opinion that they should be granted special legal protection not available to all other broadcasters and publishers?
I believe in free markets. Apparently you don't.