Consider the guild Sleeping Knights, whose members already faced terminal illness in the real world. Under ToBC, the CWT would be catastrophic. Hearing the final breath of a comrade as a permanent audio file would accelerate grief into paralysis. For these players, the update transforms the game from a heroic challenge into a haunted hospice. Their eventual desire to clear the boss (as seen in SAO: Ordinal Scale canon) would be re-contextualized not as courage, but as an escape from the auditory torture of the breath loop.
When you are scared, you hold your breath. You freeze. You make yourself small. In the real world, this is a survival mechanism. In SAO, it is a kill switch. sword art online the trap of breath concealed upd