I mean, just because Grand Daos are above normal daos don't mean that they have something like infinite layers, ancient magic by default is already cm 2 and the thing at this point is super layered, then when one reach the essence of a ancient magic one is far above any other user of ancient magic, then concept magic which is obtained by using the essence of all seven ancient magics is stronger with the ability to do anything the user wish. So just because is "countless" times stronger than don't mean it will just neg Hajime layers and all.
This will sound really rude so sorry, but could you wait before talk? I mean, you yourself have said countless times that you are bad debating and don't know much about Arifureta, so I would want if possible that you wait until someone actually knowledgeable (like Pegasus, Community_Gamer or me) give their input first.
Even in the case that the "countless" layers could be used literally and thus they neg Hajime layers he still have a lot of options, his Willpower (the unique energy) can adapt to it, his supernatural will could make him grow until counter it (as if have done countless times before, for example when stomped by Ehit in their first encounter), his own ability with evolution magic (info manip type 2) could let him either manipulate abstract information to adapt to it easier of analyse it and develop counters (which he also have done so much before). That also wouldn't put him down do to effects of the smartphone (time manip) or would counter the army of artifacts, demons and apparitions inside the Miniature Garden with all their abilities.