Originally Posted by
The Hierophant
because people who self harm are the most judgmental towards other people that self harm.
This.
But also because some people prefer to give straight-talking advice. Sometimes you need to hear things you'd rather not. It might come across as having attitude or being harsh or whatever, but ultimately it is more useful that "aww, that's awful *hugs*". Tone cannot be judged over text.
Sometimes that immediate reaction needs to be said, rather than trying to sugar-coat it.