Because of the ubiquity, nay, monopoly of systemd I always assumed it was miles ahead of other init systems. Nope. I’ve been using a non-systemd environment for a while and must say I’m surprised by how little breaks, i.e., next to nothing. Moreover, boot and shutdown times are faster, and more of that good stuff. I suggest trying it out.
If you are having those issues with booting maybe it is because you configured your network share incorrectly? If you are waiting on shutdown timeouts for something then just go edit the timeout.
systemctl edit <stuck thing>.Typically when I crawl through journald it is to diagnose a problem with a specific application. Actually, the fact that those logs are easily accessible in a centralized place with easy to understand commands to access them is a reason why systemd (or more specifically systemd-journald) is so great.
The only times that I have had major issues like that was either because (A) I misconfigured something or (B) a package came misconfigured.