That is fascinating! In particular, base2048 was designed after twitter adjusted the tweet limit to 280 characters, but started counting “heavy” codepoints as double, making the previously used base65536 less efficient in the context of a tweet.
I can't other articles on it other than that readme. Does anyone else know where I can learn more about it? Someone needs to make a Wikipedia page!
But yeah, making a wikipedia entry and adding it to this list (https://en.wikipedia.org/wiki/Binary-to-text_encoding) could spread it a little further.