that;s just so wrong. speaking from my experience, I was one of the 10 girls in a freshmen class at uni (100 of us) and yes, i was the only one that knew how to program (taught myself) but then, maybe only 10 out of all the other boys knew how to program.
Which is simultaneously anecdotal and proving the point. A statistic like 1/10 can so easily be an outlier - those aren't numbers you can use to prove a point. And 1/10 is somewhat (although not statistically significantly, given your sample size) smaller than 10/90.