He doesn't say that.
The authors interpretation is that Levin is in effect proposing re-write the constitution, or write his own NEW constitution with a large number (11 ??) amendments to it, not one of which will actually be passed.
But he is selling lots of books.
The last Levin book I bought and read was 'Men in Black' 2004, in that one he said that filibustering judges is unconstitutional. Of course as soon as Obama was elected he called for filibustering his judges.(who-da-guessed ?)
Levin’s proposals reflect the extent of the Court’s rewriting of the Constitution. I don’t know if he focuses on the change sit has made in the First Amendment, where Black’s whole argument on the relation of church and state in 1947 rests on the premise that the language of the Blaine Amendment is implicit in the Establishment Clause.
Levin isn't suggesting that all his ideas be the amendments, they are just that-- his ideas-- things that he thinks would be helpful.
It is up to each us to push our ideas to our representatives, the ones that would be in attendance at a convention. He merely gives his ideas as example.
Levin is only pushing that we have an Article V not the content of it. He is pushing a possible solution instead of just beach, whine and complain.
If he makes money for his time spent searching for and studying the solutions and then working to promote such-- why shouldn't he make that money--he earned it?
A teacher makes a salary for teaching and Levin has a legal foundation to run as well.
I hope he makes plenty from his book.