These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Misaimed Fandom: He created the character of superhero "Super-Dupont" as a parody of French chauvinism: he meant to look like the stereotype of a Frenchman (beret, moustache...) who fought an enemy called "Anti-France" and fought for French cultural identity. What went wrong is that right-wing nationalistic parties used Super-Dupont as a symbol of French cultural identity. Due to this, Gotlib decided to quit using the character.
Weird Al Effect: Many things that are parodied in his comics have become very obscure or even unknown for younger viewers. Bougret and Charolles (whose appearances are caricatures of fellow cartoonist Gébé and Gotlib himself) are parodies of French detective TV series Les Cinq Dernières Minutes broadcasted from the late 50's to the early 70's , but most readers nowadays wouldn't know that.