I disagree completely. There is no reason why any of those players you named cannot play that style of system. You've offered nothing to substantiate that. All 3 of those players can carry the puck.
- MJL
Couturier and Hayes don't have the speed. Provorov doesn't have the lateral shiftiness and stick handling ability.
Essentially, to play that role, you have to have some credible threat of putting the puck beyond your opponent with some speed. How can you do that? You can't pass it, for everyone else in your team is close to you or behind you. So, that threat has to come from you: either you are a threat with skating speed, or you are a threat to go around your opponent.
The fear of that ability to get beat one-on-one is what will prevent the defenders in neutral ice from closing in on you. If you don't have either, defenders will not give you that space. They will correctly call your bluff, close in on you quicker, and the speed of the play up ice will stall and then wither.
And a few times after that, you will start to cheat with stretch passes or try to go around the defenders by getting closer to the boards. This part is the stage I suggest we see with us. A natural evolution to cover up deficiencies.
I simply do not believe that highly experienced coaches, with prior success, will not implement a system we all can see is being done with successful teams if they have the players they need.