And I'm daring to make a bold statement: This seems to me that here #systemd actually enhances and helps with the application of the #UnixPhilosophy of using a modular design with multiple, small services and interconnecting them.
By creating reliable connections between them. Or if some connection breaks unrecoverably to properly propagate this to all affected users. And by using a simple, short, descriptive, non-programmatic language for service files.