Your epithet about "90s cruft" is hardly a technical argument, and is telling.
The startup system isn't as big a deal as people make it out to be. If it were, then inetd(3) and DJBs daemon tools would have gained much more traction over the years.
It's more of a deal on single-user interactive devices than on multi-user server systems, because there you have a ton of centralized processes interacting in complex ways. Yet it's the single-user device systems where systemd is the least likely to become the predominant system.
For all the people confused as to why even those who agree that systemd is technically superior are reticent to adopt it, it's because the absolute value is very small, and it's million+1 features are unlikely to be widely adopted even by most Linux software. On the other hand, the cost of switching and being locked into systemd for the foreseeable future is considerable.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds