Not true. Store-bought blackberries, maybe. But blackberries picked at the peak of tenderness, in a Northwest August, in a side-of-the-road blackberry patch, choosing only the berries that practically fall off into your hand when you touch them? It doesn't get any better. My wife would bake a pie out of these, every August. One of the few things I miss about the rainy Northwest. Another is the salmon. People outside the Northwest just plain have lower standards for salmon.
You and I are very far apart. You are talking about what Texans call Dewberries, wild berries on the side of the road, tender and sweet. We don’t have them in August, they are spring berries here. Commercially raised Blackberries look good but they don’t taste good.