They can be 'optimistic' all they want, but it requires a Constitutional Amendment to change it and that's not easy. The Congress has to draft the amendment, pass it by 2/3 (66%) majority in BOTH houses, then submit it to the States for ratification, either by their legislatures or referendum, and they are mostly controlled by Republicans. It takes 3/4 of the states to approve, or 38 out of 50...........so it ain't gonna happen............
OR they can get five people on the Supreme Court to say it's no longer good. Problem solved and for all the reasons you cited, overturning them is virtually impossible.
This is why the SCOTUS is the most undemocratic and yet the most powerful of our institutions, a state the founders never imagined our would have tolerated. Something needs to be done.