It doesn't make sense, because there isn't evolution in Tamriel. There is not. Reincarnation, yes.
That is a silly statement, suggesting instead of evolution there is reincarnation. One doesn't negate the other. And yes, reincarnation does exist, but that doesn't exclude evolution from existing. The two are ENTIRELY separate and different concepts and subjects. Reincarnation refers to the spiritual, evolution refers to the physical. You can most definitely have both, evolution being the flesh surrounding the soul (reincarnation).
Yeah 'evolution' in TES seems to happen through god influenced events rather than the gradual change over time.
However there simply hasn't been enough time for evolution to happen maybe if we had a longer time frame to examine we could see the adaptations over time. Also when it comes to sentient beings most adaptations become behavioural, as the need for physical changes reduces. Although the animals have to come from somewhere, so I've just managed to write all this inconclusively.
Yes the gods mess things up and evolution of large creatures takes a long time. For intelligent creatures it goes even slower as they take care of each other.
Best proof of evolution is probably that you have different types of horses, yes they are breed but it works the same way.
Why does evolution have to take so many years, to the point it seems like you're suggesting millions and billions of years, like our own? Evolution happens over the course of a generation. Evolution is not bound by time exactly, though it is dependent upon it. And it doesn't have to happen in TES over all those years, as the reason why it has been so long in our world, is what we started out as and what we are now. TES's creation of existence is different, and didn't start out as proteins or unicellular organisms that slowly and gradually changed. They, more or less, started out as multicellular organisms. They already skipped many steps that we've went through to become what we are now.
And yes, no one is doubting the influence of gods and their impact on evolution. In fact, it is a contributing factor, which is exactly like evolution. I don't think one should treat it exactly as this divine intervention, but more like a major and sudden change, which happens all the time in our world. Or act as if it is radiation, or many other factors that are similar and cause drastic changes almost instantaneously.
Evolution doesn't stop or slow down exactly due to people helping eachother. It does in a way, in the sense that what may cause that individual to die due to a characteristic being a disadvantage in the wild, is symbiotically made up for by another. Where normally this trait would be killed off due to it not being passed on, and now it is not, this doesn't slow evolution as it is still happening, whether or not if something will be passed on or changed. There's no time scale for it, other things will change. In fact, count that symbiotic relationship as a factor of evolution and an external progression towards "perfection", or adaption. That ability to have the relationship is part of evolution.
I wish to go TONS more into detail and reply more about this, but I have class. So I may edit this later or leave it be.