Having worked there for a couple years, yes, the Arctic most certainly is a desert.
Isn’t the definition of a desert a region that doesn’t get a certain amount of rainfall in a year? Parts of the Arctic haven’t seen rain for decades.
Let a creationist suggest what, exactly? The problem with creationists isn’t that they “suggest” anything; the problem is that they ignore all the evidence of evolutionary mechanisms and insist that the only explanation is a supernatural one.