I don't watch videos, so I'm not going to follow the argument but I will say there does not exist people who don't give informed consent to breaking their legs. I'm sure they're very aware of the risks.

Edit: to be clear, I'm sure dysphoria can be a factor, but if they're willing to have their legs broken I imagine other types of treatment will be ineffective at relieving that dysphoria. Similar to how people are willing to get the ends of their bones chopped off and replacements hammered in once they have enough knee pain to necessitate it.