I hang out with a lot of LGBT people, so it comes up quite often. Also, it's so great that you figured out my sexuality after I described it in a single sentence... but in my experience, others do not figure it out so easily. It's easier for me to show them the Wiki page and move on. I don't personally enjoy explaining every time someone asks about it.
Using labels and physically transitioning is NOT the same can of worms. Never
ever did I say that children should be starting hormones because other children told them to. Assuming the label "asexual" for a little while is relatively harmless (they just may not have sex for a while), but having transition pushed on them (which by the way, I've never seen in my entire 8 years of being active in trans spaces) is a completely different story. Please do not assume my position on children transitioning. I don't appreciate that.
I also never
ever equated personality with gender. Again, do not assume. I am a trans man because I felt dysphoria and explicitly desired having a
penis, flat chest, body hair and a deep voice. I explicitly wanted to be seen as a male. Now that I have these things, I'm very happy. It had nothing to do with my personality. If anything, being trans effected my personality, not the other way around (as a kid, I thought I was a boy, so I refused to play with girl's toys even though I now realize they are just as respectable now). There are a lot of trans men that choose to continue being feminine after transitioning because they find it fun.
Gender is not equal to personality, and trust me, that sentiment is parroted everywhere in the trans community.
Also if you had looked up "aegosexual" like I recommended, you would've found out that
many types of asexuals experience sexual urges of some kind or another
This is not to say that the child is asexual, this is to say why sub-labels CAN be useful for some people to know. What if someone continued trying sex over and over because they thought they
had to like it, since they experienced sexual desire? Wait. That was me. I guess it does happen! And having a better understanding of sexuality, and having that word, and KNOWING that other people existed that felt the same enabled me to stop forcing myself into uncomfortable positions because the world convinced me that sexual urges mean I have to have sex.