There are some areas of marriage that an unmarried marriage counselor simply cannot give advice on.
It's all good in theory. When it comes to the practical application, they have no experience.
I read a great book once called *And Then I had Kids* written by a lady who had all the answers for child reading until God blessed her with a bunch of kids of her own, including a boisterous set of twins.
And honestly, who would expect someone without children to be qualified to give advice on raising children?
Yet somehow, an unmarried marriage counselor works?
Jesus was unmarried. Would you consider his advice on marriage valueless?