Most of the sour grapes about training is from those with little to no 121 experience or having less than 3,000 hours tt. A lot don't realize till they get into the sim this is serious. you're getting paid to learn not only the airplane but policies and a lot of other stuff as well. They aren't going to force you to learn it and spoon feed you. The instructors know who's putting in the effort and who's not. Operating as a 121 airline pilot is a big responsibility that shouldn't be taken lightly.