I keep coming back to the fact that these technologies enable people to create simulacrums of high quality content quickly - but that shows because of the obvious short comings as identified by other posters.

If I gave myself a week to write a children's book using these tools with a human editor loop - could I create (or perhaps someone more talented) a great book? That seems possible. This seems like it was created in a couple of hours - and that is slightly interesting - but perhaps we will quickly move beyond the amazement of this as we start to see lots of quickly generated low quality content.