You are comparing fruit in a prime stone fruit-growing region to the US.

The US is big and fruit needs to be refrigerated to be transported. Refrigeration kills aromatics.

I assume you would have a similar experience buying plums in Germany. Similarly, if you bought stone fruit in California where it is grown, it would taste good.

> stop buying shit produce and suppliers will notice

Unless you are willing to pay $30/peach for them to be flown next day on a jet, peaches in New York are not going to taste as good as they do off the tree.