Surely, if you're that boxer who just started a career in boxing industry then you will be indeed insecure because there are already much more stronger boxers and much experienced in the same division you are situated. But Haney didn't let that insecurities eat him wholly and instead he made that as his inspiration to climb through the ranks to become what he is now, the highest rank that a boxer can attain in his chosen division.
As for this fight, I'm seeing the opposite view because as far as I can tell, people aren't that much excited to see the rematch because they believe that Kambosos won't do much difference this time especially in such a short notice after the fight. But we never know, let's give Kambosos the benefit of the doubt and see what he can do this time.
And as per my opinion, it was a very quick rematch to ask, Kambosos can deal with another fighter if he choose to fight first before this one happen but maybe his camp understand that the hype for this title fight is more important than fighting another fighter, we don't know if what might be the development of his skills with this short period of trainings, but yes, we should give him that fair chance to prove that he still have that capabilities, he just need another chance to reclaim his belt.
He is still young though, if ever he loses in the 2nd time he can still rebuild his career and try to move forward.
This venue is so wide and a lot of talents are also trying their chance, it's an option that most fighters and their camps wanted
to deal with.