Blame is a manipulation, or attempted manipulation of the thoughts and feelings of other people based on the apparently incorrect assumption that humanity is one big singular entity, which I think has much to do with religion. But that’s a very different topic.

Why invest in other people’s thoughts?
Why is our society so rife with dependence?
Have we become so invested in each other that we pay little or no attention to our own thoughts, feelings and development as individuals?
Isn’t the primary purpose of parenting to help your children become independent?
Can I be an independence adult when one I invest a goodly portion of my time in attempting to change, manage or manipulate the goings-on in other people’s heads?
Since you can’t control or change other people’s thoughts, why invest?

I’ve called it “Social Dependence”, it’s a social development stage where the honest are sorted from the dishonest. Where those who have honest intent but lack experience are separated from those who have dishonest intent and have made a choice to remain that way.
See “Government”

And the biggest surprise is that none of this makes sense if we all die and disappear. There must be some feedback or none of us would be able to develop.
-Tom