It was a lighthearted thread, but it was completely impersonal and objective, and, like lots of satire it made a serious point. Or specifically, SexMatters did. The thread is gone now (but I still have it open in a different window 
) and SM's post is worth repeating (though this isn't really the right place for it - apologies for that) for anyone with troubled teens currently caught up in all this.
MNHQ, I assume that the thread deletion is a symptom of increasing pressure so please zap this if there's anything problematic here. Continued gratitude and respect for providing this platform in such difficult circumstances.
Although this thread is lighthearted that diagram suggests seductive superstitious thinking like horoscopes or numerology embraced by young people who lack direction and aren't sure of 'what' they are supposed to be. Saying "I am an Aries so I am competitive and like red". Or "We are compatible because both our names add up to the number nine."
It suggests how lost young people are that they would use a ridiculous map like that to navigate the complex and trecherous social world of personality and relationships. The OP makes a serious point of 'not knowing when to transition' - because it seems 'taking T' has replaced whether to get your first piercing or tattoo.
Although they would really benefit from feminist thought young women have been systematically prevented from getting to it, with males heading up feminist groups, and encouraging them to use 'terfblockers' and to get feminists books removed from the library. It's a tragedy