That implies having feasible alternatives when there are none.
Also, it implies you are aware information being prefiltered for you. Even if Warren knew about it and talked about it, she would sound like a conspiracy nut.
No alternatives to Google or Twitter? What?
Just because you don't like the venue or the service in no way makes them "infeasible". Just because you can't as effectively promote your cause doesn't make them "infeasible". There are other search engines besides Google, and there are other social media platforms besides Twitter, Facebook, and Reddit.
Any suggestion that a private company should be forced to broadcast speech that it finds distasteful is a direct affront to the 1st amendment, full stop.
8chan being denied access to another company's resources is in no way a free speech issue. In reality, 8chan's ideas are losing in the "marketplace of ideas" and now we have people who suggest government intervention to give their points of view a leg up.