Earlier quoted context omitted.
They often don't, like the extension cord I bought that flips my breaker when I plug it in. I don't want garbage products that were sourced from the dumpster next to a Chinese factory after they make a defective batch.
"Six letter Chinese sellers" does not automatically mean cheap shitty defective rejects. If anything, that's just stereotyping and xenophobia. For every one of you, I'm sure there's a dozen who have had no issues with the product. And I'm sure there's been plenty of people who have had the same issue with a name brand product that was made in the same factory by the same process and people.
I've seen people complain that the vendor contact info is obfuscated and untraceable when it's obviously the business owner's personal home address. People will say anything about Chinese vendors.