Just playing devils advocate here to expand on your thoughts and theory. You said.
If humans are the only species that truly grasps the concept of time and planning for the future, which shows our intelligence and consciousness is a product of evolution. Then why are we the only species that has a plan to cause our own extinction, as well as the only species that has ever built the means to eradicate every one of our own species?
The result of your evolution theory probably will end with humans as one of the youngest species ever to go extinct, but also the only species that caused its own extinction.
Wouldn’t our ability to self destruct indicate that there is something far beyond evolution within us? Something we do not see or understand yet? The forces of good and evil are in all humans, not just a few such as Hitler. Those forces will determine how long our species remains on earth. Maybe those forces are part of our soul?
The oldest living creature on earth is the sponge, which probably does not have a soul. Ants, jellyfish, sharks, shrimp, sturgeon, lampreys, and horseshoe crab are some of the other oldest living species on earth. I doubt any of them have souls. As far as I know, none of them ever had a plan or the means to self destruct their entire species. What makes humans better as a species than any of the oldest species because we can plan for the future? Especially since our ability to plan probably will result in our own extinction.
We are different from many other species, we have a soul. But it does not make us better than other species. The soul holds us responsible for our actions and plans, hopefully