The Kennedy name still has some glamor and polish attached. The Biden name, not so much.
Biden is the very synonym for “Tarnished goods”.
RFK Jr. has the potential of renewing the mystique the Democrats so desperately need now.
RFK Sr. was assassinated when he got too close to potential success in overthrowing the “good old boys” of the Democrat party in 1968. The CIA sent in a Palestinian, Sirhan Sirhan, in a “false flag” action, to “clean up” a large potential embarrassment in regards to the conduct of the Viet Nam “conflict”.
Wasn’t RFK involved in Marilyn Monroe’s death?
The thing is, AFAIK, all of the other Kennedys oppose RFK Jr.