AI does not have a reptilian and mammalian brain underneath it's AI brain as we have underneath our brains. All that wiring is an artifact of our evolution and primitive survival and not how pre-training works nor an essential characteristic of intelligence. This is the source of a lot of misconceptions about AI.
I guess if you put tabula rasa AI in a world simulator, and you could simulate it as a whole biological organism and the environment of the earth and sexual reproduction and all that messy stuff it would evolve that way, but that's not how it evolved at all.
The corollary of your statement is that comparing AI with animals is not very fortunate, and I agree.
For me, AI in itself is not as worrying as the socioeconomic engines behind it. Left unchecked, those engines will create something far worse than the T-Rex.
I guess if you put tabula rasa AI in a world simulator, and you could simulate it as a whole biological organism and the environment of the earth and sexual reproduction and all that messy stuff it would evolve that way, but that's not how it evolved at all.