You can do some casual searching and find that I'm right about this in most cases. If your prices are high enough you can tolerate a lot of waste, but for most farms the economics favor hand harvesting. We're talking about at least 20% waste when you're machine-harvesting and even then a significant amount of what ships to retail has internal bruising.

Maybe that farm is selling in an area where consumers are less choosey? I certainly prefer hand-harvested blueberries (and can tell the difference)...

Certainly machine harvesting is an increasing share of the market, but it is still predominantly hand-harvested.