Interesting. Shows how aware they were of these 2025 criticisms, way back in the 80s (which shows how much of an oversimplification these criticisms are of the real situation).
You probably already know about this, but in case you didn't, there is 1 project which adds modules to cuis Smalltalk:
Digitalk’s Team/V unobtrusively introduced a non-reflective syntax and versioned source code using RCS. Team/V could forward and backwards migrate versions of Smalltalk “modules” within an running virtual image.
https://dl.acm.org/doi/pdf/10.1145/62084.62095