Jeff Weise was an asshole. Jazza Man is not.
There is nothing wrong with this movie.
It is exactly what the author said it is; what we wish.
We wish that Weise had made fun of people who couldn't get over their personal issues.
We wish that Weise had realized what he was truly doing.
We wish that he could've gotten punished instead of doing what he was going to anyway –killing himself– and choosing to take down a bunch of kids with him.
This animation is in no way making light of or undermining a serious issue and horrible tradgedy.
It is, if anything, calling Jeff Weise an asshole.