Doesn't the balance of the argument centre on whether the MPL can provide suitable directed training to candidates that has, in the past, been gained in terms of experience by pilots operating in GA and the military
Depends on your point of view..
Is it easier/safer/cheaper to teach someone who can fly how to operate a (insert aircraft here)? or..
Is it easier/safer/cheaper to teach someone who can operate a (insert aircraft here) how to fly?