For me, a huge part of it is the mingling of direct manufacturer sales (or authorized distributors) with random third parties. That makes it impossible to trust

For me, a huge part of it is the mingling of direct manufacturer sales (or authorized distributors) with random third parties. That makes it impossible to trust that a received item is actually what it's claimed to be in he listing. In addition, there's zero barrier to entry for sellers including basic stuff like safety certifications, so you see constantly about a billion entries of the same rebranded cheap AliExpress crap over and over.