Yes, I also saw that and I agree it is unclear. I am pretty sure that they mean to say that it applies flights from Australia / New Zealand to any EK / flydubai destination. After all an ‘Eligible Flight’ is one that originates in Aus/NZL.
My take is that it is just poor wording. But I am considering trying it as I need to book a CPT/UK return. Seriously considering ditching EK though, as a J Saver now costs significantly more than a F Flex a few years ago. Madness!