Watson did manage to grab all the headlines but I wouldn't be comparing her achievements to those of people working in such fields as health, teaching, community services, or environmental conservation. Yet the people who make great achievements in these fields are rarely, if ever, praised for them in the mainstream media.
Her sailing around the world hasn't saved a single child from abuse, closed the gap between indigenous and non-indigenous health or education, reduced greenhouse gas emissions, or opened the way for free speech in China. It might be a great personal achievement, yes, but it's hardly deserving of all the hype IMO.
Personally, the people I consider special are those with social consciences.