Yeah. Perhaps it was a simplistic explanation and Adam Wathan got bored and went on to working on it on a brand new implementation. I would have a hard time making an implementation of something like that sound impressive. I imagine @adamwathan meets a lot of people, some of whom he continues collaborating with, and some who he doesn't.

He also had a similar issue w/ Heroicons, which are icons from Tailwind. Someone made heroicons.dev which shows a filterable list of them, and later Tailwind made one and put it on heroicons.com which also has a very similar looking filterable list of them.

Again it was an idea that could be explained in its entirety in under a minute.