During the q&a someone asked about it. His first movie, Garden State basically got bankrolled by some rich dentist that he knew... He said the normal way of financing movies lets a bunch of rich people get to take control of the script, who you cast, what scenes make it in... Basically everything.

He wanted to retain the control he had first time around to make his next movie, so he crowd funded it... And seeing how many movies get made by talented people that end up being garbage because money men think they know everything and fuck it up... Seemed reasonable 😏