1 Watergate is a well-known yellow flash in the ninja world. Many people want revenge but dare not. If they know that Naruto is a child of Watergate, they must have come to get back at Naruto.
No one in the village knows that Naruto is the son of the fourth generation, which means that the three generations don't want Naruto.
Therefore, Naruto can only take the surname of Vortex. He also has several characteristics of Liudao and is also a descendant of Vortex.