ESP-IDF & ESP-ADF

[mikemoy]

I am a bit confused on the why there is a ESP-ADF. Why isn't the ADF merged into the IDF?
Whats the purpose to keeping things separate.

[WiFive]

Adf uses a lot of binary codecs and libs that someone not using audio features has no interest in and are also compiled to a specific commit of idf. There are already too many components in idf that may not be used at all in a project.