I didn't even notice the "5 days" part until my boyfriend pointed it out. And even then it sounded odd, since it says they give you a year of full support.
A quick reading of the FAQ (which you should always do to avoid surprises :)) clears up all doubt.
BTW, thanks to the submitter. We use this at work and it's fantastic. I really wanted to be able to use it for my personal projects, too!
But Atlassian are a very marketing-smart company, so maybe this is intentional, to generate discussion, and so make the message more sticky.