As a cadet, you are right, it is an attractive way of getting yourself quickly onto the flightdeck. Just don't winge ten years later when you feel you are underpaid as a pilot and airlines are taking on considerably less experienced pilots who are willing to work for less than the going rate to get that foot on the ladder.
There are anumber of IRE/TREs in customer airlines who don't look at CTC with quite such rose-tinted spectacles.
I stand by my original comment that they have some excellent instructors and some god awful ones as well.