Which works ok if you're an island in the middle of nowhere, but it works a lot less ok if you're an EU county with people used to the idea of travelling anywhere without even having to show an ID. We've been through some pretty rough two years, but most of restrictions are now lifted or lifting. With the amount of people being either vaccinated or recovered from covid infection we should be over the whole pandemic dance of lockdowns and ever changing travel restrictions. On the other hand, NZ and China will have problems with outbreaks as soon as they lift travel restrictions. It's inevitable.