> Opinions may vary about the convenience, efficiency or "upsides" of that
I highly doubt that the savings on labor cost will translate to "longer open hours, more organized shelves and cleaner, etc", I would guess the savings translate to more profit and more concentration of wealth at the top.
Look, I'm not so much of a luddite that I _refuse_ to use self-checkout lines, I'm just realistic about what the motivations are: maximizing profit.