The Economist writes:
WHO DECIDES your gender? The rights of transgender people stem from the seemingly simple question of how to define someone’s gender in law. Yet this week, in two countries where transgender politics and rights are most rooted, the question has received radically different answers. There is nothing simple about it.
https://www.economist.com/briefing/2018/10/27/transgender-politics-focuses-on-who-determines-someones-gender