I don't doubt "environmentalist causes". I doubt causes that rally support based on narrow representations of ecological processes, redirect attention from other problems/ solutions, and disregard the greater societal context of landscape management. Sure, we can stop cutting all the trees on public land, but it's sort of pointless if that timber just has to come from private land instead. I guess we could stop building things out of timber, but I think you'd be hard pressed to argue that concrete and steel are more sustainable materials.