It's prob the other way around -- for almost a decade, Amazon's made it incredibly accessible for any Chinese factory, trading company, and middleman to spin up new brands on Amazon to reduce American brands and resellers' pricing powers. So the guys on Temu are selling their stuff rebranded on Amazon because it's fairly easy to spin up new stores and brands, while making it difficult for US sellers to do likewise.

Even worse (this actually happened to us a couple years back), Chinese companies outright steal our images/assets and then put them on other channels like Temu or Aliexpress, selling their knockoffs there pretending to be us. We were only made aware of this when we noticed products asking to be RMA'd from our support email, but with order receipts coming in from Aliexpress.

I digress, but the beatings will continue until morale improves...