> What issue is bigger than harassment?

The fight that started this rift.

> Why are you defending someone who is repeatedly harassing someone else?

Because of the reasons for the harassment.

> Anyone who does this shit is a pathetic loser, without exception.

That’s ridiculous. You just skipped understanding reasons and judged without context.

> OP does not want this contact.

Yes. But is that really in his best interest? Wanting something doesn’t make it necessarily wise.

> Their father needs to get over himself.

He’s trying to by communicating.

> If he cared about OP, he wouldn't go against his wishes.

He may feel there are deeper issues and want to solve them.

> The father clearly doesn't give a damn about OP, or he would listen to what OP's actions say.

No. He just has a different goal.

> If you need me to be even more exhaustive in explaining this very simple concept, let me know.

Don’t worry. I explained it back for you instead.