The concept is true, offspring of the 50’s and later are not replenishing the country. No matter their explanations dems are importing new dem voters.I read a article several years ago about why we are allowing illegal immigration.
IIRC it is the fix the democrats are using because they say we are dying.
Between abortion and people programed to have one child families it has taken a toll on our countries birth rate.
So the fix is to allow anyone and everyone in to fix it. That was the gist of the article. I'm not sure how true any of it is though.
Unfortunately I cannot remember the writer of the article or its title.