This is a really great question, one that's been in my mind for some time. I have a fairly high opinion of Volcker, but he is not without his critics. I do know his experiment with trying to control the money supply ala' Friedman was apparently a failure.So, Mr Volcker was "wrong" or, politely put, outdated.
As a matter of fact I am currently wading through a paper about Volcker entitled "What Remains of the Volcker Experiment" , by Benjamin Friedman, a political economist at Harvard. (Here is a link if your interested: https://scholar.harvard.edu/files/bfriedman/files/what_remains_from_the_volcker_experiment.pdf
I might feel confident enough to comment later after I finish wading. In the meantime, I'd be interested in your own view.