RFKjr has some kind of a throat condition that makes it come out gravelly like that. It is hard to listen to.
Before Bill Clinton ran for president, I heard him give a speech about education from the steps of the Arkansas Capitol building. He said all the right things about education, but his voice was terrible. I did not think he could ever run for president because of it. Either he stop doing whatever was causing that terrible sound or he got the best medical care in the world for some kind of allergies because that awful voice disappeared.
His voice is caused by a neurological medical problem named Spasmodic dysphonia. It isn’t something he can fix.