Naruto's father, Namikaze Minato, is a gifted ninja who knows all kinds of difficult sealing techniques. After the Third Endurance World War, he became Naruto, because teleport is called yellow flash, which is the fourth generation, which is what Ai called Watergate. First of all, you can be sure that you will never surpass Naruto. Namikaze Minato is not the protagonist, and you can't let the protagonist have all kinds of adventures. Naruto's son of God was reincarnated as the father of Feng Shui in Apollo, and he is still the son-in-law whirlpool family.
If Naruto's father hadn't died, first of all, Naruto's father couldn't have made him a pillar of Kyubi no Youko, and no father wanted his children to be discriminated against, so the saying that Naruto became a pillar of Kyubi no Youko would not exist. But as we all know, a large part of Naruto's strength depends on Kyubi no Youko. If Watergate hadn't died, he wouldn't have sealed Kyubi no Youko in Naruto's body, so Naruto's strength would be much weaker than now.
From the age comparison, the IQ of the four generations is not a little higher than that of celebrities, and they have the general strength of Kyubi no Youko, at least not lower than that of celebrities. I hope you are satisfied with my answer. If Watergate hadn't died, according to the plot, he should have subdued Kyubi no Youko in other ways. Then there is still a high probability that Kyubi no Youko will be in Muye Village, so that Naruto will not become a pillar force. Namikaze Minato, four generations of Muhuoying, is an excellent ninja who won the battlefield and the kitchen. However, such an excellent man died young when he attacked Kyubi no Youko Konoha, at the age of 24.