It really applies to all languages where the very process of developing extends the language. It is the modern day variant of the Babel curse: you end up with a perfect language for your problem understood by a single individual.
There was a variation of this with Scheme: the standard language was small, so each implementation extended it in different directions, and there was plenty of disagreement about which directions were good or bad.
There was a variation of this with Scheme: the standard language was small, so each implementation extended it in different directions, and there was plenty of disagreement about which directions were good or bad.