In that case it's because bananas reproduce by literally cloning themselves so a fungal blight damn near wiped out the Gros Michel. Said blight is adapting to the Cavendish as well so they're looking to to use genetic modification for a new variety. BTW the Gros Michel is still being cultivated, it's just in very small quantities because they had to genetically crossbred it
How old is mc supposed to be again? It's fine if she's just standing around and orders her dad, but geez a 2 year old kid that have an energy to knead the dough and it's gonna get worse from now on