We have much better ways to make food than cows. If you're hungry you don't go raise cows. You go farming. Much less space needed for the same result, it's much quicker and with way less risk.
Yet, people are still raising them for food. The species under question doesn’t matter. Farming is also destroying diversity so that people can eat.
There is nothing wrong here. It is the way of nature. As you read this, bacteria, viruses, and fungi are trying to do the same thing to you. The earth is green because the plants are also trying to colonize everything.
So what? It's scale that matters. Humans are absolutely incomparable to the natural effects you describe. We're brutal. One human is capable of transforming absolutely humungous areas of land in short amount of time. And there are billions of us.
