As I understand it, that isn't the only, nor even the main, complaint with systemd. On the contrary, the main complaint with systemd is that, like strangler vine (kudzu?), it's spreading everywhere, taking over functions that it originally had nothing to do with, and forcing ever more unrelated things to adapt to systemd -- thereby making them much less portable away from systemd; to something that doesn't use it.
It's like the old debate about "BTW, you should call it GNU/Linux, because..." is sooo yesterday: Nowadays it's systemd/Linux -- and well on its way to becoming systemd-OS, with the kernel a mere afterthought, soon to be if not replaced at least easily replacable. Sure, that may not bother you or most systemd fans, but one can't help wonder: Do you even realise that this is what you're condoning, or even actively advocating? Maybe it would bother you, if you realised it.
(Also, the whole "strangler vine" thing, when deliberately applied, used to have a name: "Embrace, Extend, Extinguish". Now, I can't really swear that it is being deliberately applied here... But do we really dare to blithely assume it's just a coincidence that the creator of systemd so naturally found a home at the company the expression was coined for?)