Does Fleck have a different approach to discipline than previous coaches? Possible. You would have to know Fleck's rules and be able to compare them to previous coaches' rules.
Did Kill or Claeys tell their players it was OK to smoke pot? I would say no.
Did Kill or Claeys and/or the other coaches have some kind of understanding or gentlemen's agreement that they would turn a blind eye to players smoking pot? Again, I would say no.
Every coach has rules. And every coach decides how those rules are going to be enforced. some coaches may handle things out of the public eye - i.e. a player may not start, or may sit out a game without being officially "suspended." Fleck may like to handle things differently. that is his right. that does not mean that his approach is inherently "better," just different. To really evaluate whether his approach is better, you would have to know the number of incidents and the type of incidents under previous coaches, and then compare that to incidents under Fleck over the same time period. Like almost everything else with Fleck, it's just too soon to draw any type of definitive conclusions about his coaching style and methods. A year or two years from now, we'll be in a much better position to make those types of judgements.