Make sure you only use transparent envelopes.

The post says “anyone saying that you shouldn’t call a Nazi to those who disagree with you means they are by extension Nazis”

No it doesn’t say that. Maybe you’re not overthinking it enough. I’ll walk through the proof referring to the numbering in the post. The post is saying: "anyone is probably a Nazi(3), who’s saying that you shouldn’t call everyone you disagree with a Nazi(2), if they are saying it in the following special context: they are saying it, even though you didn’t do that at all! Not even remotely. You simply made an obvious statement about real genuine actual Nazis in general being bad(1), but they somehow took offence to what should be the most uncontroversial statement ever(1) and came out and created a strawman to attack you for something you didn’t do(2). Simply because they don’t like the one thing they know about you: that you don’t like Nazis(1). Now why might that be? Well probably because they are a Nazi(3). qed

Now what? Depends

Don’t call everyone you disagree with Hitler, simply because they are named Adolf Hitler and were the leader of the German “Third Reich”, committed genocide and started a world war. So quick with the name calling, really /s (calling things by their true name, that is)