"Sim instructors havent been used to low timers and needed to approach new hires different."

How should the approach be different?

The point that needs to keep hitting home is getting through ground school and the sim at 300 hours is one thing. But putting that guy on the line is something else. A 3000 hour guy "might" have weaseled his way through the system and bring no more to the cockpit than a 300 hour guy. The one thing that's for sure, though, is the 300 hour guy HAS no practical experience to fall back on.

I don't think it's right to say that just cause a guy can get through the sim he's qualified to be an jet airline F/O. Training and real life are two very different animals and experience/background are what gives the higher time guy the edge.

You can go on to say "the airlines WILL fill these seats one way or another". I agree with that. But to say it's a good idea to accept it without question or, "just shut up about it", pays a disservice to addressing a real problem.