The divorce rate could be 99% without GP's situation ever happening. This stat says nothing by itself.

You say “mostly initiated by the woman” like it proves something about women maliciously ending marriages to make off with their husbands’ earnings. Have you met men? Many are eminently divorcible. A lot of people have bad relationships that should’ve never started, and it’s not surprising that it falls to the woman to eventually call it quits.