It wasn’t a last minute mistake. The screwed up language of Article V was simply the product of sloppy thinking. The way it has been interpreted, it requires 2/3 of the states to agree to meet in Convention. It should have specified that only a majority of states would be needed to for a quorum for an amendment convention, and then 2/3 of the states must agree in order propose an amendment. Just like the Constitutional Convention itself, which only required a quorum of seven, or a majority to meet. And just like Congress.
This simplifies the story, or the pitch, if you will. It boils down to facts. In the 229 years of the Constitution, Congress has proposed 33 amendments, and the states have proposed none. That’s not the way it was supposed to work.
The Fix Article V Amendment would simply would allow 26 states to call a Convention, and that if 2/3 of the states agree, make a proposal for an amendment to the Constitution. Just like the Constitutional Convention itself. And just like Congress.