No, it's not. Free speech is what is enshrined within the First Amendment. Anything beyond that is offered by companies because they hope to make money. You can't compel YouTube to speak any more than you can compel them to stop speaking, to offer you a platform or to take one away. That's not what is guaranteed you as an American.
You never had the right to publish anything you want in the newspaper and that hasn’t changed with Twitter.
> Also, America definitely has a far left. Claiming that the most-left cohort of America is center-right is completely disconnected from reality.
Not in mainstream politics. Democrats are centrist/center-right by world standards. Certainly by European and Canadian standards anyways -- the bulk of the world's other democracies.
Find my a single other "far left" politician not 100% committed to socialized medicine, anywhere on earth.