Nice to see an article that does't use words like "disaster" (though the word "timebomb" does occur up front.

> Countries like South Korea, Japan and China, however, have shied away from mass immigration to solve their working age population issues.

As Herb Stein famously said, "if it can’t go on forever it will stop". In fact, South Korea embraced foreign brides many years ago, at least by farmers who are particularly low status in the marriage market.