It was made in the context of "we can't trade away Boqvist, he's too important, he'll have a huge role" - ignoring the fact that he's being traded for someone who'd have the same or an even bigger role and who is already established as having done so and done so extremely well.
It'd be like us flinching at the idea of trading someone like Marchenko in any package for DeBrincat - yes, Marchenko's a damn nice prospect, and he figures to be a notable part of the team going forward, but you're getting back ALEX f***ING DEBRINCAT; the trade return more than covers it.