In the TFA, he speculates that these multipurpose devices are now "good enough" to suit most needs, and I think that is true, But it is true that the quality of our audio and video experience seems to have gotten worse of the last couple of years.
When it look at the pictures, or listen to the audio generated by the phones and tablets, or watch the video. It works, but, it just isn't very good.
What's happening is that the middle layer of high-end consumer products are just vanishing: everything is either multipurpose devices or pro devices.
For me, anyway, I still use digital camera and I still use dedicated audio that I used to play CDs and records. I'm a grumpy old man, I guess, but, it sounds better.