How is common marriage advice actually harmful? Why does marriage therapy often make things worse?

The most common tips for a happy marriage are to communicate and have date nights. Why can that backfire?

When women share that they are having marriage problems, I often hear other women telling them to make their husband go to marriage counseling. If their husband isn't willing to "work" on their marriage then they should consider leaving him. This is terrible advice and there is another option thankfully.