I’m not a fan of how Haguenauer talks about Guillaume’s shyness. This time it was very mild but I remember reading an interview a couple of years ago in which it was much harsher. It comes across as if he has a very narrow way to understand different personality traits, like it would be Haguenauer’s blind spot. That’s how it comes across in his interviews, that he doesn’t understand introverted people.
When he criticises Cizeron’s shyness, he actually criticises who Guillaume is, his innate personality. Shyness is not an illness that needs to be cured. It’s just a personality trait and therefore equal with other personality traits such as livliness. If Haguenauer wants to criticise Guillaume on something, he should focus on something he does, not something he is. In comparison it would be equally wrong to criticise Gabriella for being lively and more talkative as that is her innate personality trait.