I was just wondering something....

ok so i listenned to Rick Riordan read that chapter one youtube....well watever it was where he read about percy killing the gorgons and being send to the oguries...or however u spell it...anyway Juno said that death must be realesed i didnt think much of it but then i thought about how last time in TLH's prophecy it said "death unleashed threw hera's rage" or something like that and im starting to think that when juno said they had to realese death she literally meant the god of death Thantos if Thantos was trapped it would explain why the monsters never seemed to stay dead instead of going to tarturus and then reforming after a period of time. it's just a hunch but i was just thinking it make some sense