Bandara, the difference is those events you mention are one off arguments, and just as nonone said it was abuse when Michael and amber had their big argument, no one said it was abuse when the others did,
The reason it's abuse I've already stated, because it's a repeated pattern of behaviour, because he has done everything from gaslight her it was her fault he dumped her, through to proactively seeking her out to have a go at her because he was angry.
I am starting to wonder if you actually watch it, or if you are confused as a pp said as to who amber is, your comments are that mind boggling.