If someone has been married more than once, there could be some confusion in a person's mind. For example, consider a man with a first marriage that ended in divorce (but no annulment), followed by a "second" marriage that ended with the death of the new wife. Civilly, the man is considered a widow, but the Church presumes that the first marriage is still valid, i.e., the man is still married. The man may have a hundred reasons in his mind why the first marriage was not valid. All 100 reasons may be true. But until the paperwork is submitted to allow the Church to make a determination, the Church has to consider the first marriage as still valid.
I would make allowances for another human to be confused. There can be a lot of facts, emotions, legalities and malformed opinion in play. And there are many wounded hearts out there.
But if the individual is not willing to correct his profile and do some research, then alerting CM to the issue (and your concerns) is appropriate. There's no need to be confrontational (not that anyone has been). CM staff have undoubtedly handled these issues before.
___________________ - On a good day