Some flimsy mortal artifact cannot really control such a powerful entity. He himself probably even planted the suggestion for the Targonians to try it. He's just using it as an excuse to game alongside the rest of us while eating Cheetohs.
"Oh no, the crown was a trap, oh my, I'm stuck here... doing this thing... that's beneath me..."
So Aurelion Sol led people to believe he was under control so he could eat chetoohs without feeling judged... I support your theory
This is what a Rioter had to say about the actual Targonians In the Aurelion Sol Q&A:
The people of Mount Targon -- like the Rakkor, for instance -- do not travel to space in starships or anything. They are human and bound to this world in the same manner as other factions.
The Aspects, however, are more like spiritual entities that exist out of time, potentially in other planes of existence. They multiple “possess” hosts on different worlds and use them as their avatars. They don’t have spaceships, so swords and spears (and firearms) are still the de-facto weaponry on each world.
it isn't "Mortal" Magic crown that is controlling him.
It's actually powerful Celestial/Spiritual entities that have a hold on him.
