Outside of the adult timeline, BotW probably has a chance of fitting into the decline timeline and it being the story of OoT Link failing, or rather the story after he failed.
But right now its still anyones guess. Im more of the opinion thst BotW is a decline story and very potentially between OoT and AlttP but like
@Deus said theres more than enough evidence to sink any timeline theory atm.
Yeah, its nice to get our geek on, but story will always be an after thought in Zelda and after SS we really need to know how much retcon we're dealing with too. For all we know BotW could be retconning entire games or even timelines.
I also really cant figure how you come to the conclusion that the adult timeline is no longer canon either.