@Myself 123 Normally, yes. (Like, we never assume Knuckles is dead because he isn't in Colors, or Team Chaotix because they're not in Lost World) But if they don't appear in a game where the villain took over 99.99% of the world... again, Blaze is probably in her dimension.
Again, I hope she is still alive somewhere.
@Mystic Monkey:
It also annoys me how Dr. Eggman pretty much succeeded in taking over the world, and it's brushed off by the next game with no lasting repercussions of the global conquest.
Part of why I find it hard to go by Frontiers as canon. Or in the same timeline at least (since it is accessed in Shadow Generations). One could say Frontiers takes place where Forces did not, except that Infinite is mentioned. (Maybe Frontiers took place in a timeline where Infinite was defeated before Eggman could take over the world)
@ElectroKyurem They shouldn't have referenced Infinite then. Besides, fans dislike Forces so they'd be fine with it being non-canon. (I don't feel the same of course)