How does systemd dare to provide useful functionality? It should be just as useless as all the other inits that nobody ever felt the need to depend on, simply because they do nothing interesting.
You can just build a way more functional and secure system with all the cool features systemd provides.
These comparisons assume the systems do the same thing, resulting in a comparable system once everything is up and running.
That is just not the case. Systemd does a ton more wrt. security, hardening and reliability. E.g. it has udev integrated and not running "stand-alone" since it tends to lock itself up when it needs to start long-running services in response to HW showing up. Yes that happens rarely but there is nothing you can do about it. Logind locks down permissions to HW way more tightly than the "forks" that have the same problems that the pre-logind system had -- and that led to logind getting developed in the first place. Lots of sandboxing options are built into systemd and widely used tomrun services (I rarely saw any sandboxing elsewhere so far outnofmthenbox), measured boot is pretty much a systemd-only thing at this time, ... .