Or it could be evidence of Apache's configuration language being closely tied into its internal implementation in a spaghetti-code way! If there's one fundamental truth in open source, it's that maintaining things is hard, doubly so when it's a fork of a complex system that few people fully understand. The absence of a fork does not mean users are satisfied, simply that the people who might be motivated to fork have better alternatives for their time (for instance, learning Nginx).