-
I've heard way too many peope unironically quote the show in the real life to believe it's the case for the majority of the audience.
That's probably true, but it's always difficult to say how a line will be used out of context. I guess there are people who used that line whenever they were anywhere near a German, but for them it might well have just been a stand-in for actually goose-stepping around with a finger under their nose i.e., they were wankers.
That may be the case for you, but I've heard way too many peope unironically quote the show in the real life to believe it's the case for the majority of the audience.