Geneological research is full of fraud because people have a vested interest in lying about who is their daddy.
I vote for the DNA every time.
But there is something to be said for geneology, if conducted in an unconventional manner. Pieter Bothna, leader of the Oxcart wing of the Nationalist Party of the racist Republic of South Africa was found to be descended from a promenent Zulu woman.
The researcher began with her, and traced her 11 children. Although some of her descendants had covered their tracks from them to there ancestry, they hadn’t covered it from their ancestors to them.
And so, by the laws of that time and place, he was not eligble for his office, and could only vote as “colored”.
South Africa as a racist republic died soon afterwards.
Doing genuine research finding certificates of life stages, references to people in muster rolls, etc, is wrought with fraud?
Lots of people simply hear they are descended from some royalty and run with it, spreading the lie, but that doesn’t mean finding legitimate primary sources is fraudulent.