@whitequark @wyatt8740 @unnick Because the whole thing is fairly opaque, uses an obscure language, and the docs on how to make decent use of it are unofficial and hard to find especially after the burning of search...
No intent to blame anyone just theorize on how things got this way.
@dalias @wyatt8740 @unnick honestly even ten years ago I found it rather difficult to figure out how to write .ac files