I changed nothing. Justice Washington simply defined P&I and stated Article IV encompassed it.
Q: Do such privileges and immunities include those recognized in the Bill of Rights?
Bits and pieces.
So the Courts have said. Do you believe the phrase "Privileges and Immunities", as it applies to the national government, should include all of the BOR?
Of course not. And neither did the Founders. They never would have stood for it.
Go pick on your buddy -- he thinks Article VI applies the BOR to the states. Go convince him that Article IV applies the BOR to the states.
The blind leading the blind.