that sounds like a good theory as well, although taox never recieved a worm and its never explicitly stated that she got powers from the light and if she was the same species as savathun then she would be long dead as they only live for 10 years (although that could be 10 years on their homeworld so it could be argued that 10 years hasn't passed for them yet though i doubt a planet could take hundreds of thousands of years to orbit a star) plus they still wouldn't look like the awoken unless savathun used space magic to hide their true forms but then the eris we know would have to be a replacement of the real eris that went into the abyss since we know eris used to be a guardian and her ghost would probably notice if she weren't a real awoken