I agree with a lot of the things said here already. The vast majority have starting caring less about "Quality" of their media and more about "Availability". They want their music on every device no matter where they are, and they really couldn't care less what the bitrate is or if it is lossless. To them, "My mp3 is the same quality as my source material" is their mantra. The decline of the PC/Laptop and the infusion of the Tablet/Smartphone does increase some productivity, but in many ways, as least to a PC user, they are nothing more than an extension, not a replacement, for productivity. Any sort of typical research I need to do would be through a PC, with a keyboard and a mouse.
As far as my personal quality concerns, it depends on the venue. If I am playing music on outdoor speakers, or if I am just watching TV in my bedroom, I could care less if the audio or video is perfect, as long as it is good enough. Netflix, or XM Radio, or Pandora or whatever is fine for those needs. In my theater room, it becomes a different story. I want everything to be source-quality. But it costs a lot of money, and a special sort of personal interest to do something like that. We here who were interested in those things were already a niche', and newer generations seem to have less and less people who care about that level of performance as they have grown up with their ipod and earbuds being the kind of media they are used to having.
Then on top there is the fact that the majority of threads or topics here tend to be "How-To" guides, or construction blogs, or Q&A. After a while, most things have been refined to the point where there is no need to post a question any more. There are enough reviews on enough products, and enough comparisons that it has all been said or done before in one way or another. Sure, there are always new questions, new products, new topics, but over time the amount of information listed here already is enough for almost any new user who searches to find their answers.