Not "may", I am sure he thinks that and will always be insecure about it unless Minnie explicitly tells him she wants him to be her father. Ashok's return on the show seems inevitable now as it might be the trigger for all of this.
So far he has seen her choose her blood relations no matter what, he has no reason to think she would do otherwise when it came to choosing between Ashok and him. Also, the nonchalant way in which she seemed to say that nothing could change the fact that Ashok was her biological father, and the fact that HS had also failed as her father might make HS think he is now at the same level of failure as a father.
Damn.
No yaar....I don’t think he’s spiraled that much also. No, he doesn’t think in any way that she considers him to have failed her as much as Ashok.
His issue is still mainly about remorse over having let her down in general, not in comparison to Ashok.
But the biological angle is a seperate level of baggage. Woh alag insecurity hai about how blood calls to blood. But I don’t think he feels Mini puts him in the same level of failure as Ashok. No way. Itna toh he knows her despite his other insecurities.