Actually, that result would be newsworthy. But this is not that. This is an anecdote from a pot user saying that he likes using pot. That's really all it is. It's not bad, but it's not something that's going to change management at the level of the medical system, and it's certainly not news that, anecdotally, people on marijuana often behave friendly.

If this were a randomized controlled trial (or even a cohort study) showing that pot use actually does improve some measurable parenting outcome, it would actually be hacker news-worthy, in my opinion.