Don't disagree that blizzards will likely eventually become rarer down the line at some point, but how much rarer? I don't buy any estimate that is something akin to frequency in, say, current day Philly or DC.
Really the most pessimistic climate models have us warming about 5-6C.....but those aren't exactly realistic scenarios either. They are plausible, but need a lot of assumptions to verify. Those occur in scenarios where we assume that we do stuff like multiply our coal energy output by 6x (despite likely already peaking globally) and basically have zero conversion to zero-emissions energy. It assumes rising emissions to the year 2100 to near 1200ppm CO2.
The more realistic scenarios are something like 2 to 3C.
Maybe BOS becomes more like Cape Cod and ORH becomes more like BOS (though still more favorable geographically with coastal fronts, etc).