Perhaps this is a guarded argument against the Muslim population bomb.... After all, Europeans are not reproducing at replacement level, neither the Russians, Japanese, etc.

So, if they want to have 4 wives and 44 kids, they would have to support 3 other families of Europeans who aren't reproducing at replacement level in order for the privilege of having all those kids!

Nah, the environmentalists would NEVER have anything like that in mind, would they?