It seems a fairly explicit goal of systemd to redefine Linux as a unified platform rather than as a kernel that can run any one of many implementations of many different services. I assume this is not just the systemd lead but also a goal of Red Hat.

Personally, while I am ok with systemd defining itself as a single source for all this functionality, I hate that they are taking away ( or making it hard at least ) to have independent implementations of these services.

What Chinera is doing with dinit and turnstile is really interesting. It would be nice to have feature comparable approaches to the systemd monolith that distributions could choose from.