Dunno about NZ's legal system-- you're probably right. In the US, a rich person with an axe to grind could make your life hell. They might gleefully spend $20k to teach some snotty kids a lesson, even if they knew they would lose. Meanwhile, the kids are maxing out credit cards to cover the cost of their out-of-his-league lawyer and are horribly distracted from actually building stuff.
Even the spectre of a lawsuit could scuttle fundraising hope. Investors don't want to touch people with enemies. If you had early acquisition interest, what happens in the reps and warranties phase when you disclose that there MIGHT be a lawsuit on the horizon? Could it scare a suitor off?
All this for 5-10k pageviews on your blog, tops?