Do you seriously believe that we are where we are because Nazi speech wasn't suppressed?
Look at AfD in Germany. That's the country with the most stringent censorship of Nazi-related speech, by far; so much so that e.g. Wolfenstein had a scene of Hitler being a raving syphilitic madman censored, because we can't have Hitler in video games. And?
Such things necessarily have to be done cautiously, because it's only important to ban them if they might win, meaning the existing parties are unpopular, and you don't want existing parties to ban new parties just by saying so.
But the wheels are turning; we shall have to wait and see if it is or isn't banned.