Waton - You are describing a deist god.
A cursory glance at the unnecessary suffering he caused condemns him as a moral monster.
I know what you are saying, culling a herd, or any overpopulation is more inhumane then browsing on overgrowing vegetation, but both are essential to maintaining Gaia's balance.
By classifying the possible originator as a moral monster, you are assigning artificial substance to him/her.
All I am saying look at existence, the works, and leave it at that. I Some aspects of nature seem to be inhumane, but even then, there is often short term automatic natural pain relief build-in, effective up to a point.