Is pilot experience real issue in JetBlue incident?

The mental breakdown of a JetBlue pilot last week has prompted a closer look at another issue that has been in the news recently: How much experience do co-pilots, AKA first officers, at major airlines have before they might be left to make key decisions involving the aircraft they're flying? Proposed increases in the experience required of pilots at commercial carriers are the subject of an FAA rulemaking that critics say is why behind schedule and needs to be dealt with. Aviation writer Bill McGee explored the topic in an article published over the weekend.