TW: Blind love -abusive

My aunt and uncle have been married for more than 35 years. My aunt always speaks badly of my uncle and his family. Saying he doesn’t earn much, not a good family (in real life his family comes from a very well know family, now they lost their wealth but is still very respected). My aunt, we come from a very modest background. But she always fights with him, fights him and use abusive languages. But the kids blindly love my aunt and hate my uncle. No reason. He is a very nice guy, he taught my aunt how to do everything for example drive, helping her get a job, teach her English and so on. I don’t understand why the kids hate the father. They do everything my aunt says. If I say to be objective and think for different reasons. They don’t like it and get defensive of their mother.

I don’t know what I am missing. Also my uncle he is actually a good person, he never shouts never does. Takes care of the house and so much more.

Any suggestions?