You perfectly summed up the main point of his article, and in a lot fewer words. I was trying to come up with another animal that takes the blame for human destruction, and the best I came up with are deer. People often complain of deer venturing into their lawn and feeding off their flowers, or getting angry they have to slam on the breaks to stop for one sprinting across the road. However, we should not see these majestic animals as a nuisance, but rather, as a reflection of the fact that we have expanded our suburbs well beyond their carrying capacity and into wild forests.
Furthermore, we should see other “nuisances” like squirrels as a symbol of human preservation of surrounding trees. Squirrels need trees to live in, and if their is an abundance of squirrels scurrying happily outside, then we at least have kept enough trees to support the population. This is clearly a much simpler piece of the equation, but my point is that humans should use the populations of animals around us as an evaluation for our mark on the surrounding environment.