Temu, Amazon's 3rd parties, 3rd parties on Walmart, probably Walmart and Amazon too, are all getting their clothes mostly from the same places. I ordered some shirts from Walmart and then saw the same ones on Temu for half the price, so I ordered a couple of different designs from Temu, they look, feel and fit the same. All made of polyester too which is just as bad as them being made by slaves.
Sadly, the cost was the driving factor in ordering and probably is for most people on these sites.