The author's sudden and poorly supported conclusion doesn't really fit. Because people with bachelor's degrees have the least unemployment, it is imperative we pass a GI Bill to ensure everyone gets a bachelor's degree?!
He's getting the causality wrong. It's not because they have bachelor's degrees that they're getting jobs. They're getting jobs because they're (minimally) bright and (minimally) ambitious.
Printing 100 million bachelor's diplomas "solves" the unemployment problem in much the same way that printing 100 trillion dollars solves our financial problems: not at all.