I didn't hate his kids/grandkids...... disconnect was from his lack of being emotionally present in his family's life.
It was more than disconnect. The grandaughter was playing with her cell phone at her grandmom's funeral. She was complaining about being bored at the reception after the funeral. She bluntly asked Walt for his car and his table after he croaked. His kid was trying to get him into a nursing home so he could get the house and sell it. No, much more than disconnect. They were dispicable.