In which case they should've started up an independent service "sucks.com" where you could have "easydns.sucks.com", "hackernews.sucks.com"...ie. why involve DNS registration at all, if you're actually trying to provide a forum for people to air grievances?

The fact that the sunrise registrations are so expensive (as opposed to disallowed altogether) is an even stronger indicator that this is extortion for the purpose of profit, nothing more.