Deb's video is about the cumulative influence on growing girl's minds of marketing images that feature near-naked, fit, young women in ski gear. As girls grow up they get used to seeing how popular culture, including ski culture, uses young women this way. I don't think she mentions pop music or fashion, but it definitely plays a part in this sexualization of young women.
Deb points out that growing girls cannot help but see that this pervasive way of viewing young women (as near-naked fit bodies in sexualized poses) is normal. These women are not being celebrated for their contributions to the culture, their talents, their creativity. They are being celebrated for the shape of their bodies. Girls' initial confusion about this retreats with familiarity, and they all too often begin to want to be like those women as they enter the post-pubescent world.
Her point is that this progression is not good. She wants her viewers to work eliminate this impact on growing girls within the ski world. Girls' minds are the future. They need to look forward to being valued as doers whose accomplishments are rewarded, not as objects to be seen whose bodies are their capital.
Our culture needs to value women for their actual contributions. Does it? How many books by women does your book club read per year? How many textbooks you've had to study feature the groundbreaking work of women in their histories of their various disciplines? How many women's names did you have to memorize in school and spit back on tests because of their impact in that domain?
This issue is not just about personal feelings or sexual harassment or eating disorders or workplace discrimination, although those things are a deeply related. It's about everything associated with living while female in our culture.
Arguments against what Deb is saying that are based on the complicity of women in such marketing do not hold water. Those women are the evidence of damage done.