I can see why people who spend their lives, through no choice of their own, between a rock and a hard place, would find lifting themselves like magic up a massive rock face with only the sun and glorious air at their backs elating in comparison.
It takes only a cursory look at the strange, outcast filled history of rock climbing to see why the community might understand the importance of solidarity with people that just can't fit into the box.
Obviously we can never know if the first rock climbers were queer, but to wonder if maybe your heart desires to climb straight up a cliff into the sky and then develop the skill, knowledge and support to do so is certainly a queer thing to do.