User blog comment:Rupert Giles/Layout Changes: Breakpoints and Typography/@comment-2188496-20150519163102/@comment-126761-20150519164423

Consider the situation for tablet users on the previous layout - this was already an issue for them, but editors may have had no idea about it (and from our experience, this is very much the case). With a more consistent layout, it means that users can fairly reliably design for a single experience that will work well across all devices.