Bananas are a mono-crop. There was a disease in the latter half of the 20th century that threatened all bananas on the planet. A particular strain survived. This strain is what you NOW think of as a banana. The candy tastes the way bananas used to taste.

counterpoint: youtu.be/I9ZtvpBoXzI

TL;DW banana candy does not taste like cavendish either

I Ate the Extinct Banana (so you don't have to)

YouTube
My friend and I ordered dried Gros Michel from the same vendor Hank ordered after watching his video. They do indeed smell like banana candy. It tasted great!