Lighten up? I'm not trying to abuse the French here, I've really observed this when working with several French teams!
I found it amusing, if you're offended then my apologies, it was written with a light heart and no intentional malice; and I gauged it by my not being offended by those who comment on observing the various stereotypes applied to my specific situation but alas my skin is thicker than others..
I don't think there is any value in using lunch length as any kind of meaningful metric, can we put the guns away?