While it’s usable without doing anything, my attraction was specifically some of the enabled options and plugins, which is where that properly formatted config file would have been what I’d be looking for.
Making me resort to looking abroad for other examples and then finding some with this syntax, some with that, some boolean, some textual, some have delimited lines, others all on one…
If your configuration file is documented in such a way that “Here it is for when you’re ready to advance” … (or for those who are starting out that way and want to get right to it) that would go a lot further IMHO 
I hadn’t had much exposure to YAML until coming upon Beets and now that I’ve read more of that, I can certainly see why it was chosen for the configuration. If Samba and Netatalk were as nice to configure…