As far as I remember, no one said it's okay to accuse Bella because she is characterless. I know the members were saying that because he is simply saying what he is seeing. You see your daughter in law come out of your younger son's room and then the same guy is escorting her to her husband's room that too with his hand around her shoulders, both of them sharing comfortable and understanding glances. It's but natural that he thinks that way, especially when he has seen similar things way to often in revemr times.
He is wrong. He is a scumbag. But he is also a father who loves his sons. This two standards behaviour makes sense, although it's totally wrong, as it's pure human psychology and Ekta has used this in her shows multiple times.
Anyone watched Bairi Piya? Thakur was a rapist. No better words for his character. But even then when his neice's to be husband misbehaved with Amoli he thrashed him for breaking his neice's heart. Here he was also angry because he was ibseobse with Amoli and that guy had touched her but the other reason was equally important.
Many people who trouble and taunt their wives for petty reasons, get really angry when their son in law does the same to their daughter. When you do the tormenting, you don't realise how much that hurts, but when someone else torments your kids that way, you know can't bear their pain.
It's simply human psychology. My grandfather never allowed my granny to meet her mayka people all her life but when my dad refused to let my Mom go to a single function he was all angry. My dad would generally have no issues if my Mom wanted to visit her parent's place but that time even we had a function so he had said that she should not go.
But grandpa was beyond reason and that time he had told my granny that he realised how she and her myka people must have felt all those years.
Bigg Boss 19
Kabhi Neem Neem Kabhi Shahad Shahad
