I would like to see vendors become more proactive in discontinuing products which are found to be junk by the consumer, but that is not as easy as it might seem.
Not everyone who gives them bad feedback knows what they are doing or what they are talking about.
Reaching out to sites like this one would be a big step in the right direction. I could personally provide any of the vendors a list of parts to either find a better source for manufacturing, or just flat out not offer the part at all.