Coexisting with grizzly bears

The Squamish Chief has published an interesting article on the impact of back-country use for recreation on grizzly bears, see

They advise to carry bear spray and to avoid surprising bears.

However they don't even mention the devastating impact of the resource extraction industry (forestry, mining) on grizzly habitat. Also they don't mention some of the biggest reasons for grizzly deaths : collision with trains and cars and trophy hunting.