What could the ulterior motive be for pushing such an agenda? That's what I wondered, but I think I've worked it out. You see, they want their pedigrees to be their positions in government or their network connections or their money - anything that can be attained through nefarious means.
But your history and your family history, your pains and their sufferings, are things that belong to you intrinsically. They are things that no Empire can ever take away. I take pride in knowing that my family can trace its lineage at least as far back as 1760, clearly. Once I eventually get a subscription to Ancestry.com, or do some more research, who knows how far back it'll stretch, and that's something to take pride in, not these false idols of a broken Empire.