>you're acting as though an immigrant from any of the dense population centers has the same impact as a native-born child on the culture and economy. that is false
I am not, i am acting like immigrating literally anybody is going to be massively better than a declining population. If they live in a country, they are paying for housing, food, and services, and almost certainly have a job. taxes on top of all of that. I think the attitude of being picky is fine and wise, right now, but eventually you are really going to just want anyone instead of going inverted.
This simply isn't true. They're not going to be paying for housing and services and having a job if they commit crimes and go to prison. Certain host countries have found that certain immigrant groups tend to have very high crime rates and cause a lot of social problems. And even if they avoid crime and have a job, extremely low-paid immigrants aren't going to be paying much in taxes under a highly progressive taxation scheme.
High-skill immigrants are almost always a big win for the host country because of the things you cite, and more (they bring innovation, start businesses, etc). Low-skill/low-education ones are a crapshoot. It's better to have an inverted population pyramid than deal with all the social ills that come from immigrants that cause too many problems.
I am not, i am acting like immigrating literally anybody is going to be massively better than a declining population. If they live in a country, they are paying for housing, food, and services, and almost certainly have a job. taxes on top of all of that. I think the attitude of being picky is fine and wise, right now, but eventually you are really going to just want anyone instead of going inverted.