So one of the theories would be of mine is supporting on how lumine and aether are much more stronger than they canonically show themselves as and are hiding it
* upon entering teyvat, and falling done and meeting paimon the traveller told her that her/his power was greatly broken down because of celestia..AND WAS STILL ABLE TO DEFEAT AN ARCHON AND MULTIPLE DRAGONS AND HARBINGERS....so the traveller has done all this even after having their power broken down so greatly by celestia HERSELF
* they have told themselves so less TO EVERYONE, even paimon, paimon didn't know the traveller's name was lumine/aether before the first sibling archon quest, or when aether called lumine, and when lumine called aether, also almost no one knows that they came outside of teyvat, I think zhongli and Nahida know? I am not sure...
*they had a fake name to present themselves
(username)
*now one thing that is reminded to me always is that the unknown god herself or the heavenly Principles HERSELF CAME TO I DONT KNOW MEET OR WELL STOP THEM??!??!? Anyways like I am pretty sure the unknown god is like the highest being of teyvat (ronovo and the phanes are higher obvi) but still, the unknown god is the literal boss of archons, the one who destroyed khaneriah, or the one who gives the archons on what to do, even the og one like venti and zhongli
Point is that she herself came to stop the travellers, she could have sent someone else who worked under her?
*when entering teyvat in the first cutscene we can see lumine and aether having elements having elements of light? Maybe it was golden not yellow like light, golden,also when we met the abyss twin we can see she does not inherit any elements in teyvat same for dainsleif.... Then there is also the traveller being able to conquer elements on teyvat without a vision and can purify abyssal power?!?!?
*the traveller's burst and abilites in gameplay is also very similar to archons-
