Quote Originally Posted by Rannie View Post
Honestly even Yshtola during 5.2 speculated that the echo was due to an extreme form of a type of PTSD or something like that left on an Ancients Soul because of the Final Days, but brushed it off as speculation with out any given proof.
That half of it seems likely to be the intent, yeah - it's the "people who don't receive the Echo don't have ancient souls" bit that's speculative. We still don't understand enough about the writers' intent of how souls work and whether all/most/few people have ancient souls vs created through some other route.