Science

I (blush) was unaware of the actual extent of human and domestic animal mass compared with the rest of the species until coming across the OP study. I simply had the vague idea that it was a lot. I'm glad that others are not so oblivious.

However, it is, to True Adherents of the various Abrahamic Religions, that this is simply the fulfillment of God’s Plan:

Genesis.1 [26-31]
And God said, Let us make man in our image, after our likeness: and let them have dominion over the fish of the sea, and over the fowl of the air, and over the cattle, and over all the earth, and over every creeping thing that creepeth upon the earth.
So God created man in his own image, in the image of God created he him; male and female created he them.
And God blessed them, and God said unto them, Be fruitful, and multiply, and replenish the earth, and subdue it: and have dominion over the fish of the sea, and over the fowl of the air, and over every living thing that moveth upon the earth.
And God said, Behold, I have given you every herb bearing seed, which is upon the face of all the earth, and every tree, in the which is the fruit of a tree yielding seed; to you it shall be for meat.
And to every beast of the earth, and to every fowl of the air, and to every thing that creepeth upon the earth, wherein there is life, I have given every green herb for meat: and it was so.
And God saw every thing that he had made, and, behold, it was very good. And the evening and the morning were the sixth day.

Of course, as we know from the Revealed Word, a mere 10 generations (Genesis.5) after The Creation and when a guy named Noah was just five hundred years old, God decided he had made a mistake ...

To many of us who sit in darkness, it almost seems as though—perhaps—He got it wrong second time around as well. Certainly does seem to have made an error in giving humans neither sufficient foresight to prevent destruction of the biosphere nor Planet-B for a backup.