Because vaccination reduces risk of admission to hospital, admission to ICU and death – not a waste of time to get vaccinated. Like seatbelts don’t prevent car crashes.
NNZ being way too careful to cancel Otaki. Even with an outbreak, the actual comp is still many weeks away, case numbers are low in NZ and everyone is now vaccinated so low risk of significant harm. They could even ask everyone to home quarantine for 7 days with home RAT testing if they are worried about asymptomatic spread.