I think an important aspect to understand, for scientists like myself - is that the incredible diverse spectrum of genetic frequency did not evolve from static conditions over long periods of time.

It required massive and periodic acute changes in climate and environment over the ages. Whether that be in rapid "pockets" of change, or over long periods of time - at the end of the day, that change in environment/climate is what precipitated the evolution of species as they tried to adapt and overcome.

Climate change has always been a real thing. But to pin that drastic change on a singular species, at a specific point in time throughout the eons of ages before us, would be to completely ignore the underpinnings of science. If the climate stayed the same, regardless of human or other species' activity, for all time - there would be no motivational aspect for evolution. Logically - none of our current species would even exist according to Darwinian Theory.

As such - I do believe it is critical to explore the climate/environment shifts that have previously happened to the best of our knowledge. I believe it is important to explore what the causal factors of those shifts were and what their frequency is. But, to take the entire of scientifically derived climate history of this planet and blame drastic changes on the activity of a rather recent species (mankind, historically speaking) is to ignore the basic principles of science and pursue an agenda instead of the truth.