This is just another example of Americans projecting the unique American context to the rest of the world. As the other commenter stated, immigrants aren't universally an economic benefit to the host country. The particulars of the immigrant and the context are highly relevant to outcomes.

Aside from that, this elevation of economic concerns as paramount is a strange outgrowth of Americas unique position of economic powerhouse with shallow cultural roots. You cannot expect other countries to also see economic growth as the metric that subsumes all other concerns. Harm is multifaceted and is very much up to local sensibilities to determine what they value and how to preserve it.