Where do they have the opportunity to address their prejudices? How can they understand if they never have the chance to talk to the other side, or have the other side be able to engage them?
With the automation, the semi-forced interaction is gone. Humans are "lazy" by default and those situations won't happen.
Are you saying that profiling people in stores is literally the only chance people have to talk to "the other side"?
How about they use any other available opportunity for human interaction in any other situation in their lives to address their prejudices?
I am not saying profiling people in stores is the only chance, as the profiling is already a base assumption. I'm saying the automation is taking away more semi-forced interaction point. My premise is that it's bad, as people can only really understand each other when they interact. And most people don't actively interact. The supermarket/shopping place is one place that generally is forced interaction.