This. I think some here forget about this part. Outside of the consideration of usual "chaos" of weather where you can always get an anomaly, I don't get the "ninas aren't so bad" chorus--unless those saying that don't live in the middle, lol As you said it has been a repetitive pattern--particularly over the last 10-15 years.
Now, I get we can be screwed in other ensos as well--and sure, you can get to median still (albeit through 1-2" events). However, as the numbers you posted have shown, that THIS particular kind of fail happens the most under ninas (and rarely deviates from that tendency). Like you don't even have to even know the snowfall totals...but just look at the radar during any big storm during a nina and see that dang hole, lol Now on a positive note...you can still get enough scenery snow and decent cold for it to "feel" like winter. It just comes by those 1-2" events I mentioned (like 2018 when we got to 18" just by a bunch of those events, lol). But if you're looking for a little more of a punch...ninas ain't it most of the time!