The western united states maintained its wilderness areas through a culture of conservationism that isn't remotely respected by the new arrivals. I've spent the last two decades watching paradise be paved for a parking lot.
1980 census shows just over 40M in the west:
https://www2.census.gov/prod2/statcomp/documents/1981-02.pdf
page 6
2019 figures show nearly 80M in the west:
https://www.census.gov/popclock/data_tables.php?component=gr...
https://www.pewtrusts.org/en/research-and-analysis/blogs/sta...
The new construction methods, building types, and communal land management strategies that are preferred by implants have an outsized effect on the environment. Compare the new construction in Vail to the older buildings, which can still be seen in smaller towns.
I would prefer building preferences to become more harmonious with the natural environment instead of less.
Unfortunately, I'm not sure there is a politically tenable solution since everyone likes their own personal vehicles, and for that you need a driveway or garage, and for that you need space and roads, and that does not scale well with population increase.