The systemd init isn't half an operating system any more than the coreutils "ls" utility is half a userspace. The systemd project has many different components but they're independent, they are not all literally part of the init system.

I think the systemd people state that it is more than an init system, maybe your expectation of it needs to be adjusted. "systemd is a software suite for system and service management on Linux built to unify service configuration and behavior across Linux distributions." One of the great things about Linux is that you can always choose a distro that fits your ideals (or whatever else).

It's probably being downvoted and flagged because it's off topic to the post and adds no substance which is against site rules.