Read a book, brother. Inciting speech is specifically NOT covered under the first amendment. Did you not have anyone to give you the example of shouting "FIRE!" in a crowded theater as a child?
Platform is similarly not covered, specifically because avenues for speech (such as Hacker News) are a privilege provided by other individuals under their control (exercised by banning you as a nuisance). Internet forums are not courtrooms nor the floor of a legislative body. DO NOT conflate "gubberment interjection" and someone banning you from a forum because you're an asshole.