Seems like you are the style police ;) According to the creators of the Grid you can use it for whatever you want however you want. So there is no right or wrong. The last yeas I often hear to voices saying "this is wrong do it so" or something until I realized, that a elegant way in CSS is mostly not adaptable from one html layout to another (across CMS ). So everyone has to find his own way to write clear code which is manageable. There is no gold path.