Brett asked: “isn’t it at least possible that a Gandhabba would want to “incarnate” in an advanced robot?”
No. That is not possible at all.
Gandhabba cannot “merge” with an inert machine.
A gandhabba can merge ONLY with a matching biological entity called a zygote.
– But it is possible to make a zygote outside a womb by using artificial insemination.
See, “Buddhist Explanations of Conception, Abortion, and Contraception” and “Cloning and Gandhabba“