@bugsthewonder Ummm...Often the Unit Test factory test sketch is just that, a test sketch and has no real value to the user. They are often the most difficult to compile and upload successfully, because the tech at LilyGO does not realize that his Arduino IDE setup environment is jam packed with exotics goodies.
Often the boards are tested with PlatfomIO, ESP-IDF or even the test program is already compiled to a binary and directly loaded into the unit!!!
So, I took a look at your program and it would be difficult to edit out the references to VAD.
I depends on what you want from your purchase.
I like to create my own programs, using the examples as examples to figure out how it works.