In reply to PaulJepson:
I think the walk in puts lots of people off. I believe Rob says in the video that there's a lot of future routes to be done on high-up single pitch crags.
These "craglets" aren't so obvious as the "big" cliffs so you'd need to put in some effort just to see whether there's any worthwhile lines on some "tiny" - from a distance - piece of rock.
And then there's the weather...