Maybe this is a country thing, or tied into one's wider social credit score in the background, or the specifics of something you returned [0], or something else? I've returned plenty of shit and have never had a real problem. I returned over a dozen 32 inch Dell monitors while trying to get 3 that didn't have dead pixels or scratches out of the box. They were stacked on a pallet in my garage waiting for the pickup. You would think this would throw some flags and end up as some kind of fight. But no, Amazon refunded them all in full, no hassle (apart from the hassle of having to do that scale of logistics merely to obtain working products).

(I would have honestly given up earlier, sent them all back, and gone with a different brand. Except there had been a good one in the first tranche of 3 that I let go past its return date. I hadn't thought the actual failure rate was going to be > 80%)

[0] On my personal account I did have a big red scary warning for a while about "restocking fees", that I think had been prompted by returning a motherboard after having tested it (yet another poorly described product with no way to find out the IOMMU groups short of buying it). I have no idea if it was merely that I had opened/tested a computer component, or if it had gotten smashed up on the way back, or what. But eventually that nag screen did go away.