Anchorage, Alaska is having record snow this year. Through the first fourteen days of January, the average dew point in Anchorage has been -17C, which corresponds to a specific humidity of 1.2 grams/m³.
http://www.wunderground.com/
http://www.tis-gdv.de/tis_e/misc/klima.htm
Gizan, Saudi Arabia has received no precipitation this year, and has had an average dew point of 21C, which corresponds to a specific humidity of 19.8 grams/m³.
Gizan has 16 times as much water vapour in the air, but hasn’t had a single drop of rain. By contrast, Anchorage has seen almost continuous snow, despite much lower amounts of water vapour.
Those who claim that the snow in Alaska is due to excess humidity, are either grossly incompetent or grossly dishonest. The snow is due to record cold temperatures, which is causing the small amount of moisture in the air to saturate and precipitate.
I think you are letting them off too easily.
They are …either grossly incompetent or grossly dishonest…, or both.
It’s time to start revoking doctoral certificates.