Why so many War Crimes?

Big fan of the sub. Been reading for a long time. Something has been bouncing around the back of my mind for a long while whenever I read this sub. I only recently realized what it was thanks to the recent posts by Ralts_Bloodthorne. I will try and put it in order below.

1. Why are there so many stories with what can be reasonable called War Crimes on r/hfy?

2. Do the writers and commenters know that these are War Crimes?

3. I'm at work and got called away so now I've forgotten what the third one is. Will post it when I remember what it is