Downplay it however you want...it was still a bigger, more impactful lowland snowstorm than anything in those winters listed above. One of the two major regional airports, for the biggest metro area in the PNW, recorded 3" of snow and tons of flights were delayed/cancelled.
Aside from all the mountain snow this month, that alone is a significant distinction from the top tier duds.
And it's not true that everywhere else other than the SeaTac vicinity didn't see snow. In Washington at least, a bunch of areas saw a couple inches of snow. Primarily in the convergence zone, and near the coast. Areas of SW BC and East Vancouver Island saw a couple centimeters as well, increasing with elevation. Only Portland, inner SW Washington, and Whatcom County took an L this winter.
There were several times where people may have got snow. Late December, Early January, Mid February, and Early-Mid March.
The Oregon mountains continue to be screwed, but the WA and SWBC mountains have basically been saved from a bottom tier mountain snow year thanks to this month.
SeaTac airport itself got 3" (this was snow depth, but total snow accumulation was obviously more). Totals were much higher to the east, even below 500 feet many areas saw up to 6" in SE King County. And between 500-2000 feet, totals between 6-12" were found. North Bend and Tim got even more. It was borderline a snowstorm for a major metro area.
Portland can claim April 2022 is a snowstorm, and I would agree. No one is discounting that experience.