It's not a true de-extinction because it's not even a true wolf. That research report is just misleading. Although you pointed out that gray wolves and dire wolves are genetically different, I'm surprised you didn't point out to the massive criticism they've got for the sensational claim that they did bring back that long gone species. They didn't. Also, I'm not sure if we should worry about "playing god". If god exists, I'm pretty sure they've killed more species than humans have. That ethical angle is just questionable.