My guess? A person making a power play Like some others have said. Someone (probably a woman as the Absolute is usually referred to as a goddess) got their hands on powerful Netherese magic. Clearly they are aiming to get all the benefits of the mind flayer tadpoles without having the hosts turn into mindflayers.
My personal question is how long we will have the tadpoles in us, assuming we want to get them out in the end.
