"All theory, dear friend, is gray, but the golden tree of actual life springs every green."
When I consider the Gaia and Medea hypothesis's put forth by Lovelock and Ward I see it as a difference of emphasis and a point of what one highlights versus a right or wrong dichotomy. Life is a dynamic mix of life and death. Awesome and dreadful. Wonderful and horrific. Beauty and agony. Order and chaos. Beyond the dogma. To use an ancient roman god I would use a metaphor of the Janus god. The two faced god interlocked and connected. The two faces of Gaia and Medea are one. The Janus hypothesis.
Janus: Roman god of doorways and archways, after whom the month of January is named. Often depicted as a double-faced head, he was a deity of beginnings. He was one of the principal Roman gods, the custodian of the universe. Janus was usually represented with two bearded heads placed back to back so that he might look in two directions at the same time. Symbolic for entrances or exits-His chief function was as guardian deity of gates and doors.
Entrances and exits. Life and death. Evolution and extinction. The day and night exist in reference to each other. Gaia and Medea do not face in each other in conflict but attached to each other they face their gateways of life and death in unison. Another way to look at it is through the perspective of Cosmic Evolution when one considers the violence of exploding stars and how that brought about a process of new life birthing planets and new stars. Our Sun in our solar system and the Earth itself comes from a supernova. A violent death bringing new life. Medea working with Gaia in a dynamic mix of destruction and creation.