I personally have nothing against these cadetships. Having said that Im very happy flying in my present job and will not be applying to Jetstar or the like anytime soon.
Aviation is not like it used to be and a few people have a hard time accepting this. I think if you took all your energy that you spend whinging about Jetstar and put it into your own flying career you would be a lot less bitter.
Now I've got some flying to do...seeya!