You will probably find that most of the people objecting to it have been in the valley far longer than 20 years and have watched again and again, the interests of developers trump the interests of the citizens of Canmore. But it's easy to think NIMBY, I guess.
If you care to read a little bit, this article has a bit on why I distrust developers to do things properly in the valley:
https://albertaventure.com/2009/09/the-canmore-crash/
But there are many examples of them lying to get what they want and leaving the town holding the bag. So you will excuse me if I have some skepticism towards the plan. It is not unfounded.