The author of this piece seems to assume that every human being on the globe sees programmes like this; whereas I doubt whether more than a quarter of them do - perhaps far less. Unfortunately, one can't even assume that the majority of the Western population have seen many of them - to my shame, I have only seen a couple of part-episodes of the named show, let alone that much of many of the other Attenborough programmes - I'm usually busy doing other things, even to watch any that get recorded.
Though I don't have documentary evidence to this effect, I suspect that a lot of the destruction of wildlife is carried out by those for whom economic survival comes ahead of wildlife survival - possibly resulting from the tyranny of Western-imposed free trade practices that always benefit the West far more than developing nations.