You can't just look at the crashes without giving offsetting credit for crashes avoided by human intervention. (USAir 1549 or United 232 as possible examples.)
Here’s a reference from the BBC (sourcing a Boeing report from 2003) that states that approximately 80% of commercial aviation accidents were caused by pilot error (when the study was performed in 2003).
http://www.bbc.com/travel/story/20130521-how-human-error-can...
Not the best example IMHO.
I think his point was they always crucify the captain even if its not their direct fault