Are authors too inward-looking?

Possibly controversial thought:

Is there a danger that writers can become too insular?

I often see posts by authors where they interview other authors, post reviews on other authors' work, discuss another author's techniques and life experiences - But what I don't see, at least not very often, is references to the readers.

So, please authors, although it's great to support each other, try to avoid becoming too inward-looking and focus more on trying to reach out to your potential readers.

That may mean that dreaded term MARKETING, but there you are, I just used the rudest word in the author's repertoire!