Honestly, it's 2024, and as a result, this post gives me a bit of a chuckle. For most purposes, systemd has won, and honestly, I hardly even notice. (Granted, I have only used Linux during the systemd era.) If systemd actually interferes with one's needs on a technological (not just a vague philosophical) level, little stops them from seeking out a way to use another init system.
Has it gotten more difficult to use other init systems these days? Yes. However, by the time a person has a problem where systemd can't do the job and have to use a different init system, they're probably more than competent enough to create custom services. I also feel like in terms of software support, only the most idiotic, worthless projects have no possible way to port hem to another init system.
I may have misconveyed my meaning. I wasn't necessarily arguing that systemd has no viable alternatives. I meant to say that where systemd doesn't work (embedded systems being a good example), chances are the lack of support won't be a burden for a reasonably skilled user.