I added the Media Research Bureau category to profiles that identified this organization as a source, sometimes as the only source. They seldom cite publications; instead they might say "According to the Media Research Bureau," and go on to name parents, list children, or describe some other aspects of the person's life or ancestry. Ideally, the profile managers or other members of the family would identify and label any information attributed to MRB that is demonstrably wrong or is unsupported by any verifiable source. But that may not be practicable, since many of these MRB sources seem to be reports provided to families as private "research," so they cannot be accessed to determine what they contain.
If the identifiably bad info and the category are simply removed, it's likely that another family member who received the same information will want to show up and add it. Some profiles affected by fraud get revised rather frequently by people who are unaware that Aunt Joan's family tree (or other source) was based on a fraudulent genealogy.