My best guess is that Bowman started believing his own hype when the teams were winning cups and all he had to do was navigating the cap and accounting. Once he had to start actually building a team, He was so far out of his depth he needed water wings and didn't really consult with anyone who was any good at prospect scouting and development. He kept looking for some wunderkinder that would be the magic pill to allow the old core to win once more, as opposed to following the blueprint of what worked--and that was that the old core (outside of Kane) had at least *some* development at lower levels after they were drafted. The older the old core got, the more the rush was on and it felt like Stan was getting less and less patient.
Even though the Hagel move has left fandom divided, as well as the lack of any move for DeHaan, I think Davidson and McI have some logic in the moves that they've done and I think they are taking the rebuild somewhat serious. Yes, it will mean some very dark times (like ABC line dark times) up ahead, but I think parlaying the ****-flavored-lollipop-useless Nylander into Lafferty, as well as getting what he did for both Hagel and MAF are moves which, on paper, a decent GM would make given the 'hawks and where the team as-constructed stands. I would also hope that guys like Reichel and possible Soderblom aren't rushed--as well as all the other prospects we got that might actually have some blue chip upside.