Instead of complaining about silly chatter, Seth Rich’s family should demand the Police/FBI make a serious effort to solve the case and bring the murderer(s) to justice. The family evinces little interest in solving the murder. Mighty odd priorities. “Conspiracy theories” and speculation will persist until the case is solved.
The very fact that they seem to have little interest in getting to the truth suggests yet another conspiracy theory...that they have been threatened or paid off by the Clinton machine.