I use Apple Pay exclusively on my Apple Watch. I don’t think I’ve ever used the phone itself to pay for something, because the watch is so much more convenient.
I am sure that if the Nazi’s concentration camps produced something convenient there would have been a lot of buyers back then too.
The difference is that the conditions in the Nazi slave camps were not well known prior to the end of WWII.
The same can’t be said for the CCP concentration camps.
And probably the company that was selling them wouldn’t have been contributing a good share of their profits back into anit-American socialist front groups like BLM like Apple does.