I hope you are right, because actually the report's findings - in the absence of a vaccine - are frankly terrifying. However (a) it's not the only example that NZ has had, a whole lockdown was engendered off one couple allowed out of quarantine early for compassionate reasons and (b) NZ is unusual in closely monitoring all arrivals very tightly indeed. Your suggestion that "thousands travel everyday to countries with negative PCR tests upon arrival and stay that way" is essentially wishful thinking unless you really are testing people repeatedly to find out whether that is true or not. NZ and Australia are among the very few to do the due diligence here.