I’d have to disagree with there being no art or theater in the forest! I find plenty of both every time I spend time there!
I do agree that the way to make cities better for the environment is to make them denser. I also think it’s crucial for public transportation, biking paths, and sidewalks to be a priority so that they become an option to the residents. If there are no bike paths or the sidewalks are terrible or even non-existant, biking and walking becomes too dangerous and simply not an option.
I think over time, most people will automatically choose the “healthier” option as long as their safety isn’t a concern.