Vertical Jump Workout by Shot Science

What do you guys think about this?
There's barely any weight training, mostly body weight.
Worth it?

Video explaining exercises and reasoning:
youtube.com/watch?v=Qz-gK-XFCbw

PDF:
app.ecwid.com/download/149101/bb829b4898693c900a3c0f421aa3c004/Vertical%20Jump%20Handbook%20Ver.%201.0%20--%20Shot%20Science%20Basketball.pdf

How well does this compare to VJB and Jump Manual for a 16 year old starting with a 21" vertical?

Sorry for posting this here as well. I wasn't sure which section to put this in.