Well, I have no idea if Collins runs a "disciplined" program or not - based on how "player-friendly" it appears to be, I doubt it seriously.
But, Collins also worked for sa(t)an, and we know that program is run with utmost discipline. I am also confident that O'Leary ran a very disciplined program, so Collins could have been influenced by any of these men.
I kind of think he is running it that way "he always thought it should be run", with the players being treated more like equals instead of underlings. And, as a parent and grandparent, I can tell you confidently that most 18-22 year olds need discipline, but of course, you know that.