The other possibility is that the Boruto series is Hinata’s dream. Her love for Naruto could have imagined the entire Boruto series where Naruto became Hokage and the two had kids together. Naruto’s victory could have also been her imagination, as Madara at the time appeared to be unstoppable and the Ōtsutsuki Clan is just a figment of Hinata’s imagination.
If this all was the case, it would make the story of Naruto Uzuamki a tragic tale. A story of a hated orphan, an un-skilled ninja, determined to succeed, almost achieving everything but at the final moment, failing at the hands of the enemy.
Imagine an ending like that. Watching 900 episodes of Naruto, Naruto Shippuden and Boruto Naruto Next Generations, for it all to end in such a sad way. Obviously, this is likely not the case and it’s all just a hypothetical scenario but not a scenario that is impossible either.