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. I'd suggest trying it out.
OC writeup by @arsCynic@piefed.social
5 seconds at every boot and shutdown is important.
The reason you shouldn't blindly benchmark an init system is because most of the time is not caused by the init system itself being slow, but the processes it manages being slow.
As the other commenter says, it is very easy to make the system "faster" by just configuring the timeouts to be lower. If you just set the timeout to 0 it will be very fast, but it won't be a very good system.