No, that impression exists for some of us who are in that 47% and are lifelong Republicans. Yes, I was highly offended and insulted because it was out of touch and elitist and it was like a big "screw you" to us who have been campaigning their butts off for Mitt. He shouldn't be writing off any segment of Americans, he should be fighting for every vote.
That said, I will still be voting for him because the alternative is much worse. Mitt is still clearly the better choice for this country. I just won't love him like I did George W. Bush.