Gets a lot easier to see it as a position you can afford to trade out of when you've just sunk 11 million into your #2 centre. I won't argue that they couldn't have kept that going, sure they could have, but bringing in an expensive #2 centre makes it way, way more likely that you end up seeing your #3 as surplus, and you've also spent time pushing his value down by playing his as your #3, limiting his PP time, etc.
I mean, Dubas has flat out stated in his book:
“The thing I learned was once we signed John to the (AAV) we did, it lifted the lid on the entire ceiling,”
That's a pretty grim effect on day 1 imo, and set the tone of the organization going forward. If we don't sign John, we probably get Auston for something closer to Eichel's extension than what he ended up getting. That causes a knock on effect with Marner because now he's pointing at Auston's 11 and change instead of 12.5, and we probably end up getting him for that Patrick Kane cap hit % I was ranting about at the time (which I think would have been 9.5-9.75). Signing the ~10th best centre in hockey for an 11 million dollar deal immediately turned that into the floor for Auston's negotiations. He ended up signing roughly halfway between that number and Connor's.
Tough to upgrade on 2LC when you have so much money locked in on a 65 point LW'er mate.