I’m pretty sure the person who said that quote about non-professional musicians who purchase Eurorack modules was Paul Schreiber, who passed away about a month ago.

Gonna look it up, and I’ll edit this post when I find out.

Edit 1: Didn’t find the quote from the film yet, but did find [1]this video (unedited interview from I Dream of Wires) where Paul explains how he himself is not a musician, but rather an engineer.

[1] https://youtu.be/6ixv4F4XD4Y

Edit 2: Still haven’t found it.

I have the film at home, but I’m traveling in Europe at the moment, so it is out of reach for me currently.