I thought it was higher than that, but you are probably right.
It is a false equivalency to deduced that women are therefore 70% to blame for divorce. Many men see nothing wrong with serial infidelity, porn abuse, alcoholism, spouse abuse or financial abuse, expect to remain married and receive its benefits, and are shocked when the wife has finally had enough and initiates a divorce.
It's not that women cannot engage in toxic behavior also; they do, including emotional abuse, and bad behavior by females appears to be trending higher these days. But Motherhood appears to blunt the opportunities or temptations somewhat in a way that fatherhood is less capable of doing.
Without a breakdown of "deal-breaker" behaviors by sex, the percentage of each sex that initiates divorce remains relatively meaningless.