In the 2012 edition of Clued Up, the CAA GA safety magazine there is a quote from the AAIB, "Some of the more common, and preventable, incidents involve poor situational awareness, largely as a result of the overuse of GPS."
if we go back to the original it refers to overuse of GPS which I read as over reliance on GPS to the total neglect of your surroundings, other navaids, charts etc.
I have flown trips where it is easy to get in that mode direct X direct Y direct Z. Pax states where are we?
42 miles to run to X! Yes but where are we?
Ahhh hang on I will get the chart out of my bag and have a look oh yes about 5 miles from Exeter.
There is always the danger of using home made points which are not in the right place!
How many pilots make home made let downs and come very low on those approaches?
Without back up with conventional fixes its a dangerous way to go reliant on GPS and GPS distance alone without checking and double checking what it is telling you.
That is all I can think they are getting at with the above comment!
Pace