Comment # 84 on bug 1055834 from Daniel Molkentin

(In reply to Franck Bui from comment #82)
> But that said it seems to me that dracut-cmdline-ask.service is a
> *special* case as it seems that this service wants to be run even before
> udev is.

Yes, the idea is arguments can be passed even for the udev cmdline. Hence this
has to be run really early on. This seems to be for really quirky cases where
you want to pass arguments to dracut that should not show up on the kernel
commandline. I'd need to ask Harald about the motivation.

> 
> I don't know if it really needs that (actully I'm not sure to see the
> service's use-fullness) but if so it seems that it should need to be
> more careful with its dependencies and explicitly use
> "{Requires,After}=systemd-vconsole-setup.service".

As systemd-vconsole-setup.service has no dependencies on its own, I would
agree.