Seems to me that this is like marriage — when it’s 1 man / 1 woman then it’s not wide open. But as soon as you change the basic understanding, then all bets are off. Polygamy? How do you say No??
Gender identity? If I can change it once, then I can change it every day and twice on Tuesdays.
If this gender fluidity is to be taken seriously, then why is there any controversy over gay marriage? I mean, couldn’t the “bride” identify as a woman for 5 minutes until the ceremony is over and the paperwork is signed?