He says, Saturday Night Live is a comedy show. It's not Meet the Press. It doesn't "ask the tough questions" or "set the agenda." It attempts, with varying degrees of success, to make people laugh. That's it. Whether they skewer and savage people in order to do so, they don't care. When you come on a show like that, you are prepared in advance to get worked over. Palin knew that. Palin came on to be a good sport. And she was. She was polite, gracious. (More so than some of the famous actors who come through there, believe me.)
However, I assume that, like Meet the Press, SNL feels an obligation to offer their special forum to any and all public figures and officials who are current. Headline making. And in SNL's case, would make for a hit show. Several people decried SNL for giving her a spot on the show. You're kidding, right? The woman is the Vice Presidential nominee of one of the two major parties in this country. Don't put her on SNL? With all of her exposure and the Tina Fey performance? What reality are you in?
If you think an appearance on Saturday Night Live would sway voters and actually effect the outcome of the election, you may have more contempt for the electorate of this country than the Republican National Committee does. And that's a lot of contempt.