They aren't coached to have the F's all fly the zone, they're coached to play as a unit of 5 as we've heard 1000 times from the staff now.
F's are just given the freedom to make decisions based on the situation on the fly, as opposed to Eaves much more structured rules of what you could or couldn't do. With Eaves you could almost just put some X's on the ice and that's where the F's were going to go on the exchange. That's sort of Lombardi style of saying "This is what we're going to do, but we're going to execute it so well you still won't stop us."
Granato is trying to play a pro style with a lot of reads. More like receivers and QB's reading the D and adjusting routes on the fly based on the situation. Mentally it's much harder I think, but very effective when everybody is on the same page. Why they aren't on the same page, why we have 3 F's flying the zone early, why they make some of the silly plays they do, is a conundrum. Seems like a lack of confidence in what they are doing system-wise, some panic and a belief they need to cheat the zone in order to score and get back in the game, sets in when they go down a goal or two. But that doesn't even make sense to me anymore, because when they play as a unit of five and on the same page, they've been really good and effective vs. anybody. I just do not get what the players are or aren't thinking.