User blog comment:12th Supernova/A Real Family/@comment-24799733-20140514134826/@comment-1595565-20140514185010

They can't include what they don't know. Ever notice how bounty increases only happen after large events involving the Marines and/or the government? Nezumi, Crocodile, Enies Lobby, Marineford, all of those alone led to bounty increases. Everything else had absolutely no bearing whatsoever or was covered up so it couldn't. So, Doffy offing daddy would only affect his numbers if the authorities found out about his involvement.