It's just a small motivational line with no agenda behind it. You have to pick your words perfectly on the internet because everyone is gonna feel compelled to have an opinion about it.
Just because you don't see the agenda doesn't mean it's not there. How do you explain that half of the comments in this thread are not about the content of the article but about the mysogyny of its author?
And the fact that people are commenting on the author's agenda could be evidence that people are defensive or in denial that they are part of a system that is biased against women as much as it is evidence that the author maybe hasn't done the best job of combating that problem.
Misogyny /mɪˈsɒdʒɪni/ is the hatred or dislike of women or girls.