Nuance seems to be a tricky concept for some who disapprove of FWR.
Let's try to spell it out in short, simple terms.
I am pro same sex marriage/civil partnership. On this issue I expect I would disagree with Arlene Foster. There will be a great many more. Politically and socially, I am poles apart from the DUP. I expect most here are in the same position.
However, I don't feel CJ had any right to repeat a particularly damaging allegation which he must have known if he gave the matter more than a nanosecond of thought could destroy her political career, without apparently taking any pains to find out if it was true. He must have known it was defamatory. The only defence to defamation is that it's true. It wasn't.
If you want to destroy someone's political career, go against them with reasoned arguments. Find a true scandal, supported by evidence, they've been involved with, and expose it. This actually wouldn't be hard with the DUP. But don't make things up. That plays into their hands.
He could have saved himself by deleting the tweet promptly, apologising, taking more care in future. He didn't.
He ignored all the correspondence about the legal action. He had no reasonable excuse. He eventually had to attend the court case and standing up in court (on oath, I assume) he came out with one ludicrous excuse after another. His legal team must have been in despair.
This is not about being pro Arlene Foster and what she stands for. This is about being delighted about a huge humiliating defeat for a notable misogynist who thought he could say what he liked about a woman from Northern Ireland, because in his world view women are the support version of homo sapiens, not full people in their own right with feelings and rights, and Northern Ireland isn't important and nobody from NI, especially a woman, could touch an English/London-based celebrity.