Given things like this: "The default configuration is defined during compilation" [1] and the fact that you'd think 'timedatectl status' would tell you the NTP server you're supposedly trying to sync to (spoiler alert: it doesn't), I'm unsurprised of any further atrocities committed by systemd.
[1]: https://www.freedesktop.org/software/systemd/man/timesyncd.c...