Windowless permitted development flats approved at appeal

A plan to convert a light industrial building into 15 flats under permitted development rights has won permission at appeal, despite seven of the units lacking windows and the inspector commenting that they “would not be a positive living environment”.

So why would a supposedly intelligent and well trained planning inspector, having made such a statement, still permit such a sub-standard form of development to go ahead?

Unfortunately, this summary is from a subscription site, so I am unable to get any further details.