jonza, I know by now that you support it but for the sake of the lurkers I present below an excerpt from the article you linked to:
"When God authorizes the nation of Israel to wipe out a people, it is a lawful execution due to their rebellion and sin against God. Furthermore, such an extermination can be seen to be merciful by delivering the young into the hands of the Lord and possibly saving their souls by not giving them time to become "utterly sinful".2 Additionally, further generations that would have arisen from the perverse culture, are likewise prevented from coming into existence and spreading their sin."
[footnote] 2. There is debate on whether or not children are saved if they die early. This paper is not meant to answer that question but to pose a possible reason for God's destruction of the young.
No commentary needed.