I should still think that it is possible that they have all received Omega 2. Since Queen (then Princess) Asrial was a junior officer on board the Wayward Son back in the early days of the Golden Age, she would have had access to Edison Bell and his supply of Omega 2. And since everybody and their brother was taking it (with the only known exceptions being Vaughn, Redneck, and PCHammer), and we know that it can work on non-humans, there is no reason that she wouldn't have taken it. After all, there is a difference between being incredibly long-lived and being immortal. And once infected, I seem to recall that it is possible to give it to other people (was it Secrets that this happened in?).

Plausible? Maybe. Is it what happened? Probably not.

-jrb
Jeff Bradberry