User blog comment:Rupert Giles/Layout Changes: Breakpoints and Typography/@comment-4470100-20150524224658/@comment-2126441-20150527182734

The benefit is "we see no difference" to users of mobile or tablets (much improvement! Much wow!) with obvious disregard to any desktop user (not just humongeous like people try to make out, 1920x1080 is the common screensize in today's market).