I hope it's better done than his other projects that, while impressive at first, are full of corner cases and incomplete documentation ... which is brilliantly convenient when you sell consultancy for them.
(just speaking from experience, not a personal attack)
All my projects are free software (including their docs). You are free to improve them, or to not use them, or as you stated to hire me or anyone else to do it for you.
Anyway, I'm interested in hearing more about the corner cases and incomplete docs you stumbled upon, to fix/improve what can be done.
(just speaking from experience, not a personal attack)