@tomjennings
Max/MSP is one of the langs I have students in my P-Lang class research present to the class. “Convince us it’s a language!” is the mandate, and it’s always a fun day in class.
I know a fair number of experimental musicians who are not at all programmers, but got into Max/MSP and did some wonderful things with it. It’s quite marvelous as a tinkering tool for individual artists! Has a bit of the HyperCard spirit I praised elsewhere in my posts.
And yes, it doesn’t scale up well. “Write-only” is a bit severe IMO, but it certainly does not scale well to large projects or multiple people.