Unfortunately, people do not do enough research before picking a doctor and some just pick a name from a list provided by their insurance company because they sound Jewish. It is unfortunate that since a “patient” is so upset and in need of help and support they do not feel in control of the situation and do not think that THEY have the right to interview the therapist. In reality, at the first appointment they should ask questions of the therapist such as where he went to school, when he graduated, who his Rav is, if he is married, if he has a family, etc. You can then discuss what you found out with your Rav, spouse, best friend, or sister (not ALL) or maybe even your family doctor and decide if the Therapist is the right fit for you.
I don’t believe that a single person, maie of female is qualified to give marriage counseling no matter the age. Just because they learned how to counsel a couple in school, they still need personal experience to understand the sensitivity they need when it comes to real live actual couples.
Having said that, a patient has the onus to understand if the therapist is a good match for them or not, and if it is working for them or not. You do not have to stick with the therapist you start with if you don’t see that their advice is working for you or if you don’t feel that you are making progress. Certainly not if it is detrimental to your progress. DON’T blame the therapist when the client themselves are not forced to go there, they do have a choice.