Sure. Politically - because it showed absolute stupidity of Hillary: sane politician doesn't speak in this way, ESPECIALLY when she hunts for votes. In additition to being absolutely idiotic, this showed "human side" of her too: callous, naughty and, again, stupid. I know persons in my family, who decided to vote for Trump after that in protest. And they voted for Obama before. In short - with this comment Hillary has shown himself to be as foolish as Trump was. But everyone knew that about Trump, so it wasn't important. Discovery of the same features in Democratic candidate was VERY unpleasant surprise.