I have put together an article with Mayan Prophecy about the 2012 event and the 9/11 symbology as well as how the significance of the date itself was overestimated by everyone but the energy shift requires a long time to fully enfold.
You are right that the date itself turned out insignificant at first look. But it signified the end of the Fourth World and the beggining of the Fifth. So far, the energies ebfold exactly as predicted. Super interestings what the Mayans have accomplished with that calendar and their prophecies.