It is really hard for even professional historians to gain a good understanding of old technical works. There is just too much unavailable context. In the end, you get to ascribe whatever motivations you want by picking and choosing your quotes. So if Neoliberals want to use The Wealth of Nations as some sort of theological text, then more power to them. They just can't use it as some sort of appeal to authority as that particular world no longer exists. That applies to this article as well.