It is unlikely that I would know their relationship status, but if I did, it would not matter. But I don't think there is any "should" about it - we all have different things that are important to us. Some people do feel strongly about marriage and divorce, and might find it harder to talk to a T if they knew that s/he had been through a divorce.

That being said, I wouldn't expect a T to give me advice at all, and relationship advice is something I wouldn't look for from anybody, so it would be weird in general to get that.