This case may have set a worrying precedent.
I do not advocate, as some libertarians do, that we do away with all defamation laws. It does make some economic and moral sense to penalize speech that is demonstrably and objectively false, and results in specific harm. However, I am in all circumstances opposed to defamation being a criminal offence — a barbarous relic that has no place in a free society. And truth should always be a defense.