Author checking in. I wrote on Smalltalk's ENVY too - https://paulhammant.com/2017/09/01/smalltalk-envy. Though I've used it myself, I've paired with many that have.
https://www.google.com/books/edition/Mastering_ENVY_Develope...
The fun thing is the way people could subvert and ignore the recommended development process because it seemed inconvenient to them.