And how are the practicalities such as food and road freight overcome?
If you want to know, ask NZ, Thailand, Vietnam, South Korea, Singapore, and many African countries. They will all be able to explain the difference between essential travel including imports (with real quarantine) versus North Korea style completely shut borders.
Many countries had temporary pandemic border control (thanks to places like the UK, sadly not as short-term as it should've been).
North Korea is the only country in the world to completely shut borders. All the others continued to have food, medicine, and other necessary imports.
Anyway this was all explained yesterday. Rather than me repeating the same info (in response to the same claims), perhaps it easier for us all to simply scroll back through yesterday's posts.
My coffee's getting cold.