I am saying that in any forum of thousands of members where marital problems are discussed, you will get lots of people who will blame their SOs because their relationship has fallen apart. It is inevitable this will happen so I don't think it is worth getting defensive over. If this were a forum of thousands of women and a small number of men, do you think the situation would not be reversed? - namely lots of threads where women were blaming men for the breakup of their relationships. There is a lot of hurt and blaming is common.
As to what I think of blame itself, it is a worthless exercise. What is done is done. What really counts is the resolution, forgiveness and moving on.