Well if they didn't specify that it was men only then I'm not surprised she's pissed off. They asked for tough strong people who like physical challenges to apply, she spent time and effort doing so, thinking "well that sounds like me", only to be told that it never meant her.
They should have made it clear from the start that only men need apply and then she needn't have wasted her time.
I do agree with her though generally that if women are never represented in the mainstream as being able to do stuff - as being tough and strong and enjoying physical challenges - then there's no precedent in general women's heads that this stuff is an option for them IYSWIM.