The parts I bolded are bald-faced lies.
Re the first claim about brain differences: There's no reliable, sound, trustworthy body of scientific research which has "studied brain anatomy and function of" people who identify as trans that provides any solid persuaive evidence, much less a shred of proof, to back up the view that "we already know" all the people who identify trans today were born with, or have developed, brains that are anatomically and functionally different from "cis people."
In particular, no research whatsoever has been done on any of the many male people who were labeled trans as small children which shows they were "born in tbe wrong body" and thus have "girl brains." (BTW, no significant structural and functional differences have been found between the brains of newborn or young baby girls and boys.)
The only evidence for the claims about children being born with opposite-sex brains comes from propaganda put out to create the myth that all the male children in recent history designated "trans" as preschoolers then turned into public figures by their attention-seeking parents like poor Maddie were somehow born with "a girl brain."
These male children's supposed "girl brains" are cited to explain why they have such a strong liking for dresses, the color pink, hair bows, and clothing, fabrics and factory-made consumer products that are shiny, sparky, frilly, and toys and entertainment media that are cutesy, saccharine sweet and "girly." The notion that liking this sort of stuff is indicative of a "girl brain" is based on the most regressive sexist, shallow, insulting and stupid stereotypes about female human beings imaginable.
For example, the website of one of USA's most powerful and well-funded lobby groups promoting "child transgenderism," the Human Righs Campaign* says:
"From the time she was two years old, Jazz [Jennings] knew that she had a girl's brain in a boy's body. She loved pink and dressing up as a mermaid."
Here's young Jazz reciting for the camera the clearly-scripted, rehearsed line that since early childhood Jazz has been regurgitating on command for adult attention, applause, acclaim and "gender affirmation" like a trained seal performing a ball trick:
If it were really true that people who identify as trans, particularly the children, do have scientically-proven brain differences that can be seen on scans or found through some other kind of objective medical testing, then it would make sense for brain imaging and other medical testing to be done as part of the standard workup when they're taken to clinicians to be evaluated for a formal diagnosis of childhood-onset "gender dysphoria" (previously called "gender identity disorder").
So how do you explain the fact that no brain imaging nor any other kind of objective medical testing is done on any of these kids before the adults in their lives diagnose them with GD/GID, officially pronounce them "trans," and start "transitioning" them?
The sad truth is, no medical testing nor any broad, thorough psychological inquiries, investigations and evaluations are conducted when these kids are seen by the "gender specialists" who diagnose them as having "wrong brains" for their bodies. Most of these kids are diagnosed as having GD/GI and deemed to be trans after only one or a couple of sessions with a therapist.
Indeed, quite a few parents of so-called "trans kids" from Anglophone countries whose "childhood transtion" stories have gotten big play in the press say that the gender specialists they took their child to pronounced their little one "trans" within the first 15 minutes.
For example, in the press accounts about Trinity Neal of Delaware, USA, Trinity's mother DeShanna Neal said after she "located one of the few gender therapists in Delaware who would agree to evaluate a four-year-old," the therapist " immediately diagnosed" four-year old Trinity with "gender identity disorder" at the start of the first visit. During the second visit, the the gender therapist told Trinity's mom that if Trinity wasn't transitioned, the preschooler would commit suicide, asking the rhetorical question that "gender therapists" routinely put to worried parents in order to guilt-trip them into transitioning their children: "Do you want a happy little girl or a dead little boy?"
If it were really true that these kids were born with, or soon develop, marked brain differences that set them apart from the so-called "cis" population, then why aren't brain scans done on them to verify and document this remarkable fact about them at least when they reach the age when their clinicians and parents decide it's time to put them on "puberty blockers" and cross-sex hormones?
Wouldn't it make sense for the medical doctors who treat so-called trans kids to have these kids get an MRI brain scan - a procedure that takes 30 minutes to an hour - just to be absolutely certain that they've been properly diagnosed and really do have "trans brains" before subjecting them to medical interventions that have irreversible effects, many of them negative, that they'll have to cope with the rest of their lives?
I look forward to you filling us in on why scans of these kids showing that they really do have brains of the opposite sex are never done.