Then Trellium would be Atium which we know is not the case.
I wonder why Atium looks the same as it did in era 1 after the reveal that it was an alloy. I suppose it could just have an overpowering color.
I'm not sure I understand what you are saying. Yes Patji is an Avatar of Autonomy, I'm not sure how that proves that Trellium is somehow Adonalsium's shardmetal.