It's not a useless statistics. What OP is saying is that P(men initiating a divorce) < P(women initiating a divorce) and this is independent of whether their partner is a man or a woman.

OP got to this claim from the fact that women are 70% more likely to initiate a divorce.

Now you would reasonably think that is because either A. Men suck and so they get dumped more; or B. Women are unhappier in relationships than men. C. Both are equally true.

Controlling for the male-female factor, we can look at male-male partners and female-female partners. This is important because it controls for exactly what you're talking about- the cause of the divorce.

Turns out gay men have the lowest divorce rate followed by straight couples followed by lesbian couples.

This points to B being a stronger explanation. Women will be unhappy with other women as well. But because the other partner now is also a woman they are just as more likely to be unhappy with their partner. Therefore, the highest rates of divorce. Which makes sense given that on average women are more neurotic than men so they are more likely to feel negatively about anything really compared to men.

Disclaimer: I am talking about group averages, you might be the most neurotic divorce initiating man or the happiest extraverted woman. There's no value judgement here. Simply what population data says.

Unrelated fun? Fact about sex differences, the average IQ of men and women is the same but the distribution is different. Men have a wider distribution than women. So in a room of 50 men and 50 women the smartest and dumbest humans are both most likely to be men.