Just to be clear : do you even think it's possible that rushing a player could affect his development? Like, do you believe Lane Hutson could have benefited from playing on the Habs this year?
I usually really respect your contributions and enjoy your posts, but your stance regarding that point is unusually radical. Dach had all the tools in his draft year but never really dominated in juniors. He was selected for his attributes and the potential that they implied. It's kinda working for him now, but he's still not the projected star I saw in him, and he obviously had confidence issues from being inserted in Chicago too soon. It took the shock of a trade and the GM of his new team do a seduction operation ("we're gonna play some offence" quote on draft day and probably more conversations behind the scenes) to bolster his confidence to reach the results we are saying.
There's not any indication that rushing him paid dividends, unless it's part of the process you praise to deliberately gamble on a drastic change of scenery for this approach to work.