Think of the Aoi Iseijin as a huge human eating baby. It's small, it's hungry, what does it eat? Humans? And why does it eat Humans? To grow.
In other words, the AI are currently quite small, and in order to regain their former strength they need what? 'People' (well, their bodies anyway.) Infest the humans, send them out on assignments, infest leadership, get high, higher, highest. Have win.
The AI will reflect this goal ingame. If you read the task descriptions, it shows that only one of the groups actualy actively hunts humans. The others are all focused on expansion and deceiving. So, nope, no full out war like Das Wilde are doing in Rheinland/Omega.
P.S : @Magoo ; If you have any bad experiences which were Keeper/Morph related, please let me know. Trying to, naturaly, keep the bad experience count to a minimum.