This is a straw man, nobody asserted that the consequences should not be considered. Clearly, whichever way we proceed there will be considerable consequences; I doubt there is any dispute about that. Your argument seems to fail to acknowledge the dystopian consequences of NOT doing something.
Also, let's dispense with inappropriate jabs such as referring to other perspectives as "fantasy".
Also, let's dispense with inappropriate jabs such as referring to other perspectives as "fantasy".