This is an unprecedented move and I would have liked to see RFK Jr be Trump's VP and Vance could take another position this time around in the Trump administration but I actually think this move is better. Robert Kennedy Jr is going to take his name off the ballot in 10 "Swing States" and leave his name on the ballot for 40 states.
We have to think of the possibility that the Democrats recruit another young Soy Boy that will try to use a RPG (Rocket Propelled Grenade) to take down TRUMP Force 1 with Trump and Vance on board or they will ramp up the court efforts to put Trump in prison before the election so it is imperative that Kennedy stays in the race.
It's likely that Kamala won't debate Trump or Kennedy or do any interviews because the plan is to take them out by other means and leave no other opposition on the ballots.