Unlooked-at pictures: A question

A column in the Times today in which the writer describes organizing photos taken on a family vacation includes this:

The downside of being able to shoot and store all the photos you want at little or no cost is that you can shoot or store all the photos you want. (Experts are suggesting that the average number of times a photo is viewed is dropping from one toward zero very rapidly.)

It’s the part that I’ve put in bold that interests me. Maybe it’s just a joke. Is it? Or is anybody familiar with any research or expertise or studies of this subject?