Bullshit.
I grew up skiing Tahoe (Kirkwood mainly), and have skied all the big resorts in Utah, Mammoth, Vail, Taos, Hood, and Whistler/Blackcomb, among other ski resorts. Alyeska may not be better than all of those places, but it's at least worthy of comparison. Trust me, pound for pound, Aly holds its own.
Also, Anchorage and Girdwood generally aren't that cold, especially compared with Fairbanks. The January average is around the mid-20's, which I've found comfortable enough. There's not a ton of light in December, but things change quickly. By March, we're getting nearly 12 hours of sunlight. That makes for a very long ski day. My friends tell me they go backcountry skiing after work in March and April, when there's light until 9 p.m.