Another weird thing about Venus is that its impact craters only go back so far in age. This, combined with the planet’s lack of plate tectonics, has led to the theory that Venus lacks a good mechanism to shed heat from its interior, and what happens over time is that the planet just gets hotter and hotter until the surface melts. Then all of the heat is released, the surface cools and solidifies, and the process starts all over again.
I don’t know how universally accepted this theory is, but it does explain why the surface of Venus only appears to be about 500 million years old when the planet itself is much older than that.
It took life on earth about 3.5 billion years to go from nothing to us semi-intelligent apes. If life just generally takes that long on average to create an intelligent species, then it is difficult to imagine life evolving that far in such a cycling, overheating environment.
Of course the ancient aliens folks can always come up with some weird alien explanation that explains the destruction of the entire surface of Venus.