Genuine question to younger parents, is that how self harm is dealt with these days? Is there never any anger, disapproval or disappointment shown? Are things like selfishness or stupidity never mentioned? Is the 'victim' rewarded in such a way that they identify with, and enjoy their victim status?
Nothing to do with being a younger parent (I am 45), but blaming, disapproving, anger etc is in no way how you deal with self harm unless you want to seriously fuck up your already upset/struggling child.
In my dd's (asd/anxiety/spd) case she self harms because she feels useless, worthless, ugly, scared, anxious, out of control, numb ... if I added any of what you are proposing to that, her self harm would get worse and she would do it in secret with good knows what consequences.
She isn't a victim, and she doesn't enjoy it AT ALL. Most of the times she doesn't even realise she is doing it (meltdowns lead to unpredictable behaviour)
Your post is ignorant beyond belief.