Looking at the search statistics below, they have a point:
Here are the latest Google Trends results for "meme":
History of "Meme" searches (with news information)
Here are the current Google Trends results for "memes":
History of "Memes" searches (with news information)
Was my proclamation ahead of its time? Will 2013 also be the year of the meme?
Update: Merriam-Webster Inc., has announced their "Top Ten Words of 2012". For the first time, "meme" made it onto the list!