Because the creator himself specifically addressed the headline in the article. So either you think you know better than the creator, or just saw the headline and knee-jerk wrote a comment without reading the article contents.
Saying "You don't need a PhD you just need to believe in yourself", or whatever, is fine - but it's not related to the article, so gets down votes.
Saying "You don't need a PhD you just need to believe in yourself", or whatever, is fine - but it's not related to the article, so gets down votes.