I have seen the Fast Track product (students) first hand post CPL. About 8 or so I think so far. Some are good, some are not. I believe it comes down to motivation. It is not enough to say "I think I will be a pilot, that is a cool job!" Those who are not good enough don't pass. Same as everywhere else I suppose.
The person running Fast Track gives the students a very "rosy" picture of their abilities / prospects. Add to that some youthful overconfidence and lack of tact of some individuals and you have a situation where a newly qualified pilot could annoy many an crusty old salt of a Captain. Experience will be the great leveller, and the Fast Track pilots will end up OK in the end.
The more important issue is: are there sufficient experienced Captains to mentor these guys/gals through their first couple of years?
Z.