Paraphrasing from my friend who injects lore into his bloodstreams: its kinda crazy to think totk Ganondorf could have been hiding under hyrule for the entire series, especially when we consider totk states that the Great Calamity 100 years prior to BotW is what initially weakened his seal. If...
Don't buy it. This is the third ganondorf and this all takes place after any other game we know of pre-botw. That's more believable to me and thats where I think the implications lead. one day ill find those sources again