A. She looks like a well made up Tori Spelling. And a well made up Tori Spelling is still a Tori Spelling.
B. While she is well spoken, so is about every lawyer I've met, and many of them aren't particularly smart. I might add, that while they have silver tongues, it's still feces that slips from their mouths most often.
C. She spends a lot of time developing complex and witty (or not so witty) sounding one-liners that, minus the more sophisticated rhetoric, are in essence the two lines that precede a laugh track in a network sitcom. What she lacks in substance she tends to make up for with cheap shots. Calling the New York Times the "Treason Times," for 12 paragraphs, or framing the lyrics to "Kwanzaa bells, dashikis sell, Whitey has to pay," to Jungle Bells isn't really reasoned debate. It's just mud slinging. It really just doesn't rise to a level worth of much note. It does sell lots of books. Surprise.
Really, I suggest you read her work more carefully and ask yourself how many facts she's really relating. (I suggest reading her work on the, admittedly silly, Kwanzaa holiday for starters and decide if this is someone you actually want to credit with a vast and complex mind relaying gripping arguments and complete logic chains).
D. I suspect that the majority of her popularity is driven by an audience badly in need of articulate spokeswomen, but who are starved of them because their politics have badly alienated about anyone in simultaneous possession of two qualities: femininity and intelligence.