It’s all a little fuzzy but essentially the Gros Michel was THE cultivar of banana, but it became susceptible to a disease. It still exists, but can’t be farmed like it used to be.

The chemical was developed and likened to the Gros Michel variety in mind for it being called ‘banana’ flavor since the Cavendish (i think?) hadn’t yet replaced the world market as the banana cultivar of choice.

These kinda memes tend to rely on passive prejudice and ignorance to hit.