I've noticed in all the Orthodox apologist videos and articles I've read today, they all conspicuously avoid mentioning that there are divine energies without a beginning. They can explain eternal energies in terminology that sounds orthodox(small o, as in not heretical), but they cannot explain energies with a beginning whatsoever, so they avoid mentioning them as much as possible. "St." Gregory Palamas taught the existence of both however, and his teachings are now official Eastern Orthodox teaching. I quote: "The superessential essence of God is thus not to be identified with the energies, even those without beginning."(emphasis mine) He also taught that "essence and energy are thus not totally identical in God, even though He is entirely manifest in every energy."
From these two quotes alone, it is clear that in Orthodox theology, the energies are God. He is entirely manifest in every energy as it says. The fact that energies are uncreated also means they must be God/part of God, as only God is uncreated. We also know that God is eternal, without beginning. But Palamas says that at least some creations have beginning. This means that while God is without beginning, part of God had a beginning. Not only does part of God having a beginning contradict that God is without beginning, but that parts of God came into existence at different times means that God changed. But it is dogma of both Catholicism and Orthodoxy that God is unchanging. That energies could be uncreated(that is part of God), yet still have a beginning, logically means that God must have changed when those energies came into existence. Before He was without those energies as part of Him, after He was united with them, according to Orthodox teaching. This is heretical.
I'm sure Jan Dyer would love to tell us that his inability to reconcile the immutability of God with non-eternal energies is one of the reason-defying mysteries that just proves Orthodoxy. It must be nice to have a magic wand to wave away every contradiction in your religion. It is not a luxury that believers in the Truth have.