To be fair Jobs seemed to be a big fan of skeumorphism too - the leather stitching on the Calendar.app was supposedly modelled on Jobs's Learjet so it can't all be attributed to Forstall.

Not to mention, the Maps fiasco happened under his watch.

Whilst this was a big blunder, the Apple Maps project was an absolutely enormous undertaking. The Google Maps app itself had an almost 10 years head start, beginning life in 2003 at a startup which Google purchased. I think it's impressive what Apple managed to put out even though it fell far short of Google's work.