With the Mists of Pandaria expansion comes many quality of life improvements. All expansions add little details to improve our experience in some way. Players who have only played since the latest expansion take these changes for granted. And veterans cringe every time newbies complain about something that is so much better than how it was when we began playing.
For example, MoP has AoE looting: just one right-click and all the nearby corpses are relieved of their valuables (or organs as the case may be). I have seen some people in general chat confused by this change. "I can only loot one body!" But once this change goes live, all new players will consider AoE looting the norm.