People said this when self checkouts came to supermarkets, "i refuse to use them so that people stay in employment" within a few years most are self checkout and very few lanes left for staff to supervise on normal checkouts (mostly for elderly or disabled). Both remained but the weight went towards more people going through self checkouts (even if the other lanes take more space);
My point is that people can resist training it, but someone else will.
I’m not so sure about the self checkout. I would rather say this was engineered by stores. From what I remember stores have on purpose replaced cashiers with self checkout machines, leaving only one or two. This resulted with long queues and forced people to self-checkout.
I still hate self-checkout machines and always try to avoid them. But queues now are unbearable and of course, now that machines are there, staff is expected to do more than just checkout. So they often leave their spot and you can only use the machine.
Labor is replaced on purpose, with a strict plan. Also, everything you do in store is precisely managed (single route from entrance to exit without a way to skip any section, bread at the far end of the store, product layout on specific shelves and near checkout)
I don't believe this was a result of organic demand from customers.