I am not claiming that Kennedy could not pass bills.
My supposition is that Johnson would be better at it and that if Johnson applied his famous ‘Treatment’ any bill had a much better chance of passing.
Now you have LBJ running against JFK for the party nomination only months away, except of course you have LBJ having the president killed so he didn’t have to bother with starting a late campaign.
My point is that those bills were coming under JFK and his being killed didn’t create them it just shifted them to LBJ, but arguing with your extremely detailed fantasy history is something I’m not interested in.