I agree with that take. Even though Kevyn's plan was to move on from the tank fruit, he was instructed in his first offseason as GM to make it work with Eichel. I think we all thought the moves to bring in Hall and Staal and even Lazar & Eakin were sound hockey moves and also (especially with Hall) Kevyn was bringing in the players that Krueger wanted to coach.
Terry named him GM; I suspect Kevyn laid out his grand plan to turn the roster over to Terry but Terry felt the team was close to being a playoff team and with the infusion of the right veteran players they could get there. It might have worked too if Jack didn't have the problems with his neck.
But when the wheels did fall off, Kevyn got the nod from Terry to carry out his plan.
It might not be 100% how it went down, but what we saw seems to fit with that sequence of events.