> I still don't understand how you can be "proud" to have been randomly born in a specific country.

I never said that

Being proud of being a certain nationality is a function of many things. Your ancestors migrating, or staying in the same place, founding values, current and past culture etc.

Following your reasoning, one could say “I don't understand how you can be ‘embarrassed’ to have been randomly born in a specific country.” I think your frame misses whats actually being said. We agree no one should place the value or fault on random birth origin.