Like a lot of people have already said, people are complicated and contradictory; they are rarely one thing.

So you can judge him for, and learn from, the way he has treated other people, while also being grateful for the love, respect, and good parenting he has shown you.

Another aspect is that people often make mistakes and grow from those experiences. It might help you resolve some of the dissonance to talk to him about those things. Many people have experienced that having kids radically changes their priorities. Some people are fiercely loyal to a few people, but couldn’t care less about everyone else.