What is the reason why Saitama didn't accept the waterspout as an apprentice in One Punch Superman?

I saw that the second season of One Punch Superman finally aired normally after 1 week. In the latest episode 10, we saw that the waterspout lost its former style. In the face of mountain explosions and heroes, even a few teeth were beaten. But after Saitama's handsome appearance, he solved the mountain explosion twice with the power of the dragon. When Saitama heard from the waterspout that there was a stronger monster in the distance, Saitama didn't listen to the waterspout's advice and went directly to kill the hero.

First of all, who are Saitama's disciples now? Strictly speaking, Genos is the only apprentice recognized by Saitama, and others are followers at most. At first, Saitama didn't intend to accept Genos, just because Genos was in a hurry and offered to pay the rent, while Saitama was as poor as death. So I must admit that Genos is my apprentice. After all, an apprentice who often buys himself high-grade beef and high-grade crabs wants it.

But after spending some time together, Saitama found that he had nothing to teach Genos. After all, he didn't know how Saitama became stronger, but Genos kept asking questions. Every time he asks Saitama, it's nonsense to muddle through. However, it is a bit embarrassing to accept a hose and face the questioning of two apprentices, and then he has no dry goods at all!

The second reason is fear of trouble. Visible Saitama's character is very afraid of trouble, unless it is what you want to do, otherwise no one will lose face. Facing the daily life of his great disciple Genos, Saitama was almost troubled by Genos, observing himself either explicitly or implicitly.

The third reason is the room. Since Saitama joined the Hero Club, although his ranking has not improved, there are more frequent visitors at home. From Genos to the king, to blowing snow in hell, and even later to Banggu and Bangpu, this once made the small one-bedroom house in Saitama have no space to waste.

The last reason is popularity. In fact, teacher Saitama is very wronged. His disciple Genos is an S-class hero. He is not only a C-class hero, but also a hero. The waterspout, which can be clearly seen at the sports meeting, is extremely popular, powerful and handsome. This should be his own business. With Genos, Saitama will never turn over in his life. After all, Saitama himself said that he wanted some fans, but all the fans were taken away by Genos. How could he choose someone more popular than himself as his apprentice? The above contents are for reference only.