Catholic laziness or something else?

The Feast of the Assumption is not a holy day of obligation this year because it falls on Monday and American Catholics can't be expected to go to Mass two days in a row. Did the bishops make this decision because they know we are too soft and lazy to go to Mass and they want to avoid putting us in a position where they know we will fall into sin or do they secretly think that many of us can't stand the Novus Ordo and only go becuase we are obligated (hence the NASCAR like spectacle in our parking lots after Mass and stampede to get out right after Holy Communion) and in their kindness they just want to give us a break when they can?  Either way, it's puzzling.