A military pilot shows up with years of quality experience and already knowing how to fly. All the airline has to do is teach them a new airplane and company procedures. A 1500 hr CFI has extremely low experience or knowledge about high performance aircraft. Everyone was the know nothing new guy at one point, but only the regionals are set up at this point to make the transition from “zero to hero”. I haven’t met very many regional captains who are comfortable leaving the cockpit when paired with a green new hire, but it’s not an issue with someone with years of jet experience. If career airlines want to hire inexperienced pilots, they better significantly change their training programs and offer a track for experienced people, and another for those who will be exposed to high performance flying for the first time.