It's not surprising this niche has developed. What's surprising is that Amazon seems dead set on undermining their business to support it. It's also surprising that people write these amazed posts like they've just discovered this problem, when it has been going on for a decade.

I read a HN comment a while back that framed the topic of declining quality plus free returns as companies outsourcing their QC to the customers and that really stuck with me. This is really the natural progression of wanton consumerism - so much stuff is sold and never actually used that it's profitable to only worry about the case where the buyer actually uses it and finds it lacking.