Agreed. In my oversimplified view I think of getting a major snowstorm at the coast here as having similar odds as winning $50 on a $1 scratch off lottery ticket, which is something like 1 in 360. That would work out to one big storm every four winters if distributed perfectly. Maybe at the moment the odds are now 1 in 500, or one in every 5-6 winters, again *if distributed perfectly.*
Either way, you need a heck of a lot of luck to have a winner. And given the low odds to begin with, the change in the total number of big storms that one sees in a lifetime might be so minor as to be unnoticeable. Then when you consider the temperatures in the 1980s and the number of big snows and compare to the temperatures and big snows in the 2010s, it becomes apparent that its not just about cold. Someone on this board posts a nice image of a triangle with the three ingredients for snow: cold, moisture, and luck. That's very true.