You botched copy/pasting the quite. I fixed it for you:
To start less.
And to start more in parallel.
That makes complete sense and is in fact how all major operating systems optimize boot times, and how software developers often optimize performance in general. Do as little as possible, and do as much of it in parallel as possible.
Tricky to do with init scripts because there are a lot of dependencies to manage and checks that need to be done for timing and sequencing. systemd makes it easy and I've used it extensively for building a custom OS for embedded systems where hardware init and configuration has to happen in specific sequences, but can be parallel with other parts of the OS starting.