Why do you think that Madara didn't treat Hashirama or Tobirama as "babies" when they talked about life morals, IT?
That's it: including the fact that the age difference between them was really high? Madara was over 100 years old and Hashirama at the maximum 60 years old when he got dead.
Oonoki himself mentioned the fact that he lived more than "Madara" and therefore knew more. And didn't listen to anything the "young Madara" had to say.
Why Madara didn't do the same to Hashirama?
That's it: including the fact that the age difference between them was really high? Madara was over 100 years old and Hashirama at the maximum 60 years old when he got dead.
Oonoki himself mentioned the fact that he lived more than "Madara" and therefore knew more. And didn't listen to anything the "young Madara" had to say.
Why Madara didn't do the same to Hashirama?