We can speculate that this was not a mainstream thing in Kryptonian society. Then again, their society was on the verge of collapse when the Els committed the h

We can speculate that this was not a mainstream thing in Kryptonian society. Then again, their society was on the verge of collapse when the Els committed the heresy of conceiving a "general purpose" child in a society where bloodlines were bred for particular roles in society. Creating a life-like AI resemblance subject to the same restrictions as Jor-El himself seems almost "normal" in comparison.