I'm a bit curious about this. While I don't personally subscribe to the thinking, I do think there's a decent argument that when the team is ready to contend Murray and his conservative nature isn't the man for the job. However, he's already overseen one successful rebuild, so why wouldn't he be the guy for another? A lot of heavy lifting was already done for him but the job then was still quite impressive.
The Ducks have not had a rebuild since before the cup.
They had very quick retools but never a rebuild. A retool is possible when you have prime Getzlaf and Perry to build around.
The biggest things the Ducks need are top line forwards and those are near impossible to get unless you sign one (which the Ducks have never done) or draft one (which the Ducks have not done in almost 20 years).