I think it’s one of those words used to describe a person who continuously behaves badly and to a point that it’s healthier to avoid interacting with them as much as possible.

That’s like interacting with someone who has AUD (alcohol use disorder)I don’t care to be exposed to their mood swings and constant poor decisions. I have seen enough of that. Yet I do respect the effort to admit there is a problem and an effort made to change it. Yet that means also owning up to the bad behaviors directed at others who do not deserve it. Some with this disorder become career victims and constantly blame others.