Welp that’s a rant. Here’s an example where integrated supply chains and arbitrary supermarket standards cause eye-watering levels of waste: https://vimeo.com/223234033
The supermarkets know very well what kind of produce doesn't sell, so these specs actually prevent waste, because unsold produce that is about to spoil really does go to waste.
Other people and the original source mention food rotting because it cannot be picked before it spoils, which is probably a problem. But in the case of these bananas, they have been picked and made it all the way to a sorting facility, and could be sent to somewhere for consumption. These bananas may be worse than the ones that rot in the field, because they are responsible for additional energy and labour expenditure.
Again, even if those bananas see no other use than being dumped, that doesn’t mean they would’ve been consumed by actual humans if it hadn’t been for those standards. Some other organism will consume them instead.