gaara had already completed 14 A rank missions and 3 S rank missions prior to the chuunin exams(so 17 jonin-exclusive missions) - even kakashi had only completed ~40 S rank missions in his like 20 years of being a super well-known Jonin (that fought during the 3rd ninja world war, at that). Gaara may have been a psychopath but he was also depicted as being well beyond his years in terms of wisdom and leadership capabilities.
Hashirama may have been a naïve fool, but nothing we see suggest he wasn't able to lead a village. Do you really think Naruto has the skills at this time to manage a village without basically dumping all of the important work onto shikamaru or someone else?
He's definitely a hero, but not ready to be a leader. Not yet.
As if mission stats should have any real bearing at his point after all Naruto has done, which I remind you includes:. beating Gaara, Kakuzu, Nagato, and carrying the team against Obito and Kaguya to the point he might as well have soloed both. He also saved thousands of shinobi, from the moment his clones arrived on battle fronts.
Naruto has proven himself to be more charismatic and powerful than anyone else alive. Why would Kakashi be more qualified because he's completed more missions? There is nothing to suggest Naruto wouldn't take his job seriously. I think you're vastly underestimating Naruto's maturity to the point you're acting as though he's a child. Naruto is not a child. He has proven himself to be mature when it's necessary, like Hashirama.
You act like Kakashi becoming hokage means that Naruto will never have the chance. It's not his time, and Hashirama is much more level headed and than Naruto. They have they're obvious similarities, but don't give me that "they're exactly alike" argument.
To start, my main issue with Kakashi becoming Hokage is that it has become a very likely possibility when we're at the end of the manga. In other words, I've been waiting 15 years for Naruto to become Hokage at the end, only for Kakashi to step in and become Hokage because Obito told him to. What the fuck is that shit, how is that even remotely acceptable to you?
Hashirama is much more level headed, based on what? When he's nothing fighting, he's more outgoing than Naruto. When both are fighting, they're serious. As would be expected. Naruto has a stronger personality that Hashirama, he doesn't succumb to weird bouts of depression (which are for comedic effect, I know), and actually gets forceful.