The Executors were a "native species" of the home planet. At least a high-intelligence Executor like N-6, who was built in the image of a human, was only developed during the era of exile. If one had to find the rightful home for these AIs, it would be the Zenith and the lunar base. No matter which way one looked at it, they were not part of the home planet.
The ones who saw the home planet as home and were eager to return to their motherland were the humans who created those Executors.
However, when humans created the Executors, they had injected too much of their feelings into them. In the face of the devastation unleashed by the planet devourer, they taught everything they knew to the Executors like parents educating their children. They taught them how to fight, and instilled human ideologies and culture as well as the concept of home in them.
