Every faction claims they support free speech and every faction also supports suppression of certain types of speech.
No, it assumes a bill is required to establish consequences for fundamental rights being denied.
Speech alone isnt sufficient to be charged with that, which is why it passed supreme Court scrutiny. Similar to criminal conspiracy laws, where you have to pursue tangible actions IRL not just talk about it with a friend.
Also I believe you are wrong about incitement. It is the speech itself that is illegal, you (ie the speaker) don't have to do anything yourself or even really know or otherwise interact with the would be perpetrators.