I agree with you. The whole "movement" against systemd seems to be "this is very different than the way we used to do things!" Of course it is; computing has changed a lot in the last 30 years since sysvinit was designed. We now care about things like power management, hot-plug devices, etc. and the only way to ensure a consistent method of handling them is to have a single control point. The kernel is also a single point of failure by necessity; so it's well audited and a lot of work goes into making sure it is rock-solid. Because systemd is now the de-facto heir to sysvinit due to its inclusion in almost every major distro, I suspect it will get the same level of care and oversight.

A lot of these complaints boil down to the fact that systemd is a single point of control for a lot of different functions. IMO systemd actually reduces overall system complexity by creating a unified interface for launching any sort of automated executables.