Because people like to make claims about human nature that simply aren’t generally true. Rather than recognizing the way complex circumstances can shape human feelings and behaviors, I frequently see people break it down into simple platitudes like “humans are lazy, greedy, etc”, rather than recognizing complex realities like the way power erodes empathy.
Wow.
EDIT: Some of the comments on the repost on that site, 400 comments, are great.
It seems like this site is very religious, so there is lots of moralizing, claiming that the boy had done a “mortal sign” among other things.