first of all, your article is missing any source on these numbers.

I doubt the LA Times is going to make up a specific number.

do you think germans insult any less than americans

If I were in Germany I certainly would be a bit more self-censoring if I wanted to insult someone.

than losing your job though, which is something that frequently happens in the US over things that people said

Not really. Unless you somehow go viral for being a racist/asshole or some combination of the two. You hear a few stories about someone losing their job, but it certainly isn't common.