Great question. They aren't.
Imagine polling this forum to identify their heroes and then poll a non-technical forum. Then contrast the two lists for macho qualities. You can probably do this simply by counting the sports heroes.
Admitting that one is not immune to biological influences is really what matters. In this respect, nerds are more mindful. Also, nerds historically belonged to the out-group. Again with mindfulness, we will hopefully sympathize with the out-group even if our recently elevated social status is permanent.
What makes you think nerds are any different?