Fascinating! Always good to learn something new. Given the historic good connections between the French and Americans (against the English) I was somewhat under the impression that the French had their democractic values from the Americans. I stand corrected :)
I don't speak about that far in the past but a major theme of the French Fifth Republic was (and is still) being not fully aligned with the US: de Gaulle left the OTAN, Chirac was against the second Irak war, etc.
To badly summarising it, France's relationship with the USA is more a love-hate relationship than a 'Please notice me senpai' relationship: we will be the US oldest ally one day, and the next day, someone (even from the government) will use the US as a boogeyman in an argument (and like I said before, I'm only speaking about France here, I don't know enough about of how those other countries view themselves and their own relationship with the USA).
As a German, I actually don't think it's 100% ironic, there's certainly some honest admiration in that description. But you're right, the rest of it is that of course Germans wouldn't actually describe France as 'la Grande Nation', there's a reason that term is used in French in German media 😛
It's rarely used in French media and most of the time, when they spoke about it, they explain that it used as way to mock France (today it's more a friendly mockery 🙂 but it wasn't always like that).
Looking far in the past of our countries, it's a miracle they were able (with the help of other countries of course, like the other 4 founding members: Italy, Belgium, Luxembourg and the Netherlands 🙂) to build something like the EU after killing so much of the each other citizens during multiples wars.
On the other, the idea that Germans would say, 'wow, you voted in a fascist so now we can never trust you' is a bit groan worthy.
At the same time, I think Germany is still taking the Second World War into account in a lot of what it's doing today … so, maybe Germans know a thing or two about voting in a fascist. (as an example, I don't think France would have the most powerful army in the EU if Germany was not thinking about WW2).