Somewhat addressed by Megyn's guest, will a "majority" of kids who claim to be trans actually change their minds at some point? If so, it would be a pretty big deal if they already had the puberty blockers, sex reassignment surgery, et al.
There's more than just one legitimate question, though. This is a few years old, but it basically addresses some of the stuff going on within the community itself. Does it matter? Who knows.
https://victoryinstitute.org/a-look-at-transphobia-within-the-lgbtq-community/
You have brought up both of these things in this thread previously, people far more knowledgeable than myself have answered you, I invite you read through this thread to find those replies.
But I will address your 2nd part because I find your "concern" to be very disingenuous.
You're claiming by your "legitimate question" that there is a division within the LGB and Trans communities.
Why do you actually care? These, if we are going to separate them into 2 groups, are groups that you have great disdain for. Groups that you openly support and advocate to have fewer rights than you do.
Let's review what you believe about members of these two groups.
You believe they should...
Not be allowed to be married.
Not be allowed to adopt.
Not have their existence be mentioned in schools.
Not allowed to use public restrooms.
Not allowed to have the medical care and treatments prescribed by medical professionals.
Not be allowed to play sports.
Your open disdain for these "two groups" is well documented.
And yet you're now honestly concerned what one group may or may not think about the other?
Sorry, I'm not buying it.