The burning question is because akshara isn't a doctor that is why PB hates her ...... He from the beginning has been rude to her but why
Papa birla is ok with any girl as long as the girl loves his son Or his son loves her. He was ready to accept ak but then she rejected him. PB loves abhi so much that he thinks akshu as someone who will hurt and destroy her son's life.
Then on other side he already can't understand why his son hates him " So papa birla doesn't know why his son hates him this much " And he had to fight for his son's attention from manjari and neil now with akhu too.
He is disheartened that abhi had neglected him and didn't even take his blessing and top it abhi said not to attend the wedding. This all hurt and pain he diverted to the one who is the root cause according to him that is akshu.
He doesn't hate akshu it's more like he is scared to loose his son to her, afraid she will snatch him completely. He till this date didn't get a hug from his son but he went and hugged bade papa. That is another of his insecurities.
So it's papa birla fear, possessiveness over his son and insecurities that is speaking.
If only abhi had said let's all go to akshu house for the marriage fixing he would have come silently for his son's happiness. But no abhi hate for his father has been diverted on akshu by harsh.