Thank you for providing an actual argument.
As we have witnessed in many places, these stuff isn’t always outlawed. In places where these views can be expressed more freely, it either escalate to the point where someone is hurt, or they gain enough popularity that it becomes almost impossible to stop. I believe that the best way to deal with the problem is to address it quickly head on when we know this is universally abhorrent.
There is a difference between authoritarianism and having laws to protect your citizens. Authoritarians have laws to protect the regime, not the citizens.
No one is being jailed for being a Nazi when you say you have issues with immigration policies, nor are people being jailed for being a communist for saying they want socialized healthcare.
You have to draw the line somewhere and say that something is dangerous and illegal, and I think saying you support Nazis and want to do Nazi stuff is a pretty good line.
I know this won’t change your mind, but even as you continue to disagree with this, I hope you can see why this isn’t a definitively wrong thing to do.