The stories I hear from my female friends in law, medicine, non-profit, etc -- especially law -- make my experiences as a woman in tech seem downright blessed. Yet you never hear people telling women not to go into law (or whatever) due to discrimination.
Tech is not perfect, but I wish I had known about it sooner than college as an option for me. Once discovered, I totally fell in love with it and had to play catchup. That is why I spent time mentoring high school girls who were considering engineering, and a lot of them ended up pursuing it now that they are in college.
I think unilaterally pushing girls one way or another is wrong, but a lot of girls don't get as much exposure to tech so it is helpful to specifically tell them about it.