I don’t think there is actually any contradiction.
Scotty said “same rule for everyone, no exceptions” - and that rule is unvaccinated entry is allowed, you just need 14 days’ quarantine.
Dan said “same rule for everyone, no exceptions” - and that rule is you must be vaccinated to attend or participate in the Australian Open.
So Novak is welcome to come and watch the Australian Open on TV from quarantine at the Tullamarine Holiday Inn, but that’s as close as he’ll get to it.