I will not debug 3rd party apps. I don't even want to think about my OS nor ask any questions about it. I want to use a PC and do my job. That includes it shutting down asap when I need it to shut down asap.
systemd default - shutdown not always asap
openrc default - shutdown always asap
whatever the heck macs init system is - shutdown always asap
It may be not the "fault" of systemd, but neither does it do anything helpful to align itself with my needs.