I mean, if you have zero experience with systemd, then yes. By contrast, if you've ever worked with any systemd unit files at all, then all the "systemd stuff" will be very familiar.
Which, if you're doing sysadmin type things on almost (e.g. not Alpine) any mainstream Linux distro in 2026, you should expect to encounter systemd unit files in your day-to-day.
I mean, if you have zero experience with systemd, then yes. By contrast, if you've ever worked with any systemd unit files at all, then all the "systemd stuff" will be very familiar.
Which, if you're doing sysadmin type things on almost (e.g. not Alpine) any mainstream Linux distro in 2026, you should expect to encounter systemd unit files in your day-to-day.