> Obviously YMMV, but I bought some Amazon MTB pedals rated 4.7 starts @ 9k ratings.

Every site is different, no? Amazon isn't AliExpress. Though lately Amazon if flooded with marked-up AliExpress stuff. I'm not fond of Amazon, their customer service is more of a hit and miss since various years.

That said, I've been watching Trace Velo. He reviews a lot of AliExpress cycling things. It's often bad after prolonged use. Meaning, yeah, their testing is lacking. But some brand do seem to be trying to become a trusted brand. E.g. Ugreen nowadays is often trusted. It used to be one of the many things listed on AliExpress.