The same "millions of years of evolution" resulted in both intelligent humans and brainless jellyfish.
Evolution isn't an intentional force that's gradually pushing organisms towards higher and higher intelligence. Evolution maximizes reproducing before dying - that's it.
Sure, it usually results in organisms adapting to their environment over time and often has emergent second-order effects, but at its core it's a dirt-simple process.
Evolution isn't driven to create intelligence any more so than erosion is driven to create specific rock formations.
Evolution isn't an intentional force that's gradually pushing organisms towards higher and higher intelligence. Evolution maximizes reproducing before dying - that's it.
Sure, it usually results in organisms adapting to their environment over time and often has emergent second-order effects, but at its core it's a dirt-simple process.
Evolution isn't driven to create intelligence any more so than erosion is driven to create specific rock formations.