Kiwi are grown in metropolitan France, they're available for most of the winter and spring. Bananas are likely from the West Indies (which makes them from France but not from Europe) and avocado... no idea, I don't really consume this.
To be honest, judging from their illustration of an avocado, the authors have never seen an avocado either.
Seems exaggerated for sure, but I guess that could be artistic choice? Avocados in Brazil for example are bigger and with a longer top [1]