Again, 7% is an enormous chunk of a company, and for a firm like Dropbox, such a stake runs easily into the millions. YC on its face has always been a terrible deal, except it isn't, because YC is the first step in a sequence that ends with you getting bought by Facebook or Google regardless of whether you actually deserve it, and that's why people sign up--not to hear advice from Sam Altman.
And I wasn't devaluing Susan's work at all. My point was that for other women with similar ambition and talent but without similar financial independence, YC would be a non-starter.