Neither really. I've actually fought back at the rebuilders. It's very rare that a team retools, acquires young core pieces, fires their GM and then immediately does a "restructuring".
What the Habs are doing is tanking, we can all agree with that. HuGo inherited Suzuki, Caufield and the rest of the players drafted between 2018 and 2021 which is a significant part of their existing/future team. Also the 1st OA pick was basically due to the previous administration. After the 2022 draft, which is where people typically start the HuGo "rebuild" at, they needed to acquire two top 6 F, a no.1 D, and a future goaltender àlong with getting rid of all the crappy contracts while developing and graduating all the prospects. This in my opinion should not be classified as a rebuild so it is just semantics like you stated but the reality of a retool and rebuild are not just semantics as they attribute to different things
He did make the team better. They made a finals. We can't take that away from them. But we can't forget Price, Weber, Danault all leaving under different circumstances. That was the most devestating blow to the upcoming team imo. What made Molson get rid of MB was the terrible 2021 offseason he had. He was on his last strike and Molson called him out