A triple vaxed person wearing a mask not checking in for a 5 min shop is in no way similar to the Novak situation.
Given the current definition of close contact, the shopper would not be required to do anything other than monitor for symptoms (no testing, no iso) if there at the same time as a covid positive person; so checking into a supermarket that does not require vaccination to attend does nothing further to reduce covid risk right now. Just assume if you go out you will be exposed.
By being vaccinated, wearing a mask and praising good hand hygiene they have taken reasonable steps to prevent themselves and others from covid risk.
Whereas Novak is:
- Unvaccinated so at greater risk of getting and spreading covid
- Has demonstrated that he does not comply with health requirements when actually positive and infectious - seen out and about unmasked, posing for photos with children
- Lied on border control document about not having travelled
- Was aware of the need to be vaccinated to enter Australia as a non-citizen and expected special treatment
- Has greater influence via his social media to spread anti-vaccination sentiment
Novak was not asked to do anything more than any other player, spectator or worker at the AO that is to be vaccinated to attend.