You can anthropomorphize gorillas or nature all you want, but the truth is that gorillas have no concept of value, because they have no concepts whatsoever. They act purely based on instinct, they have no ability to engage in abstract thinking and in particular, no ability to conceptualize the future and to compare present value to future value. The concept of value requires that you're able to do these things, and gorillas cannot, and certainly "nature", whatever that means, cannot. The same applies to beneficial things, as those things that are beneficial are simply those which increase our chances of acquiring more value for ourselves, or those things that provide said value.
The article you linked is pure nonsense. As even if you disregard the moral argument for the value of any human over the value of any animal, and if you just look at the economics alone, that kid, as he grew up, would've earned a lot of money over his lifetime (on average), and in so doing he would be helping to provide value to the rest of his society, and to an extent, to the rest of the world. If he chose to spend even a fraction of this money or time on breeding gorillas, he could've bred many more than just one single gorilla. And what's more, those gorillas could in turn become an attraction and earn plenty more money from visitors, which in turn could be used to breed even more gorillas. Hence the economic value of a child vastly exceeds that of a gorilla. To suggest otherwise is not only evil on a moral level, but completely stupid on the math side of it as well.
In reality, we both know that the reason you (and the person writing this article, and those agreeing with it) have this reaction, much like the radical vegan activists who complained about the fish in the ice skating rink, is because you hate humanity and you have a twisted fetish for all living things that are not human. This usually stems from being taught to hate oneself as a child for one's own humanity and individuality, and internalizing that in a way that all humans become the object of hate, and non-humans become the only thing there is to love or praise. It's the same kind of thing that gets people to say that only animals can be trusted, when in fact animals cannot be trusted, since they could never understand what trust means or how to be trustworthy.