The closest thing to Amazon made in Latin America is almost the same thing, I'm talking of course about Mercadolibre.com, you can ask a refund for a product but if you do you cannot leave a review at all, and the products with bad scores have their scores and their reviews hidden, that's why is impossible to find a single product with less than 4 stars, and they have millions of them, it's as shady as it gets.
Whats the goal here? Like, with amazon they don't own most of the products they sell, so presumably leaving a bad review doesn't bother amazon much, but what about temu?
Temu is about offering a convenient hyper fast shopping channel to Chinese manufacturers with customers worldwide, primarily for clothing. A product which sells for months/years and gathers reviews is not part of their vision. Their customers don't need reviews (sales numbers is everything), but the users expect them, so they are there.