aren't ppl from doomed timelines cursed? does that mean john & roxy (and davesprite and jasperosesprite) are cursed?
Nope, John’s powers are a bit different than normal time travel. In this case it was post-retcon John, Davesprite and Roxy that were doomed. And since Jaspersprite merged into a different being all together it and the other Jaspersprite aren’t doomed either.