This seems fine to me. I won't use it much, but it will make CSS "frameworks" a lot more sensible from a dependency perspective (i.e. just a bag of pure CSS fun

This seems fine to me. I won't use it much, but it will make CSS "frameworks" a lot more sensible from a dependency perspective (i.e. just a bag of pure CSS functions someone wrote), and people will continue to create abominations of CSS regardless of the available tools.