Can relate. I was beat up by another kid of my age after practice because I beat him in a really small and unimportant Judo tournament. We were both 12 and his parents, my parents and the trainers all agreed that he just overreacted because he was scared the other boys would bully him. I switched to ballet afterwards.
The reason isn’t that they believe men are disposable. It is that they believe women are inferior. Just look at the comments in this topic.