The Mystery Box
The most dangerous use of the term "Transgender" is a reference to a Gender Myth that throws all effeminate males into a Mystery Box -- all the gays, transsexuals, androgynous people, crossdressers, entertainers, men who like the color pink, men who drive Smart Cars instead of Big Trucks, male poets & artists, and so on. Supposedly, they're all the same -- all guilty of intentionally defying social conventions. (What it takes to be "effeminate" has never been rigidly defined.)
Supposedly, there's no way to tell which people in the box will end up gay, which will want to "change their gender", which will be "cured" by intense psychotherapy, and so on. So ALL the people in the box are placed under a psychiatrist's watchful care. Everyone in the box is subjected to the same series of treatment regimens. The only way to get out of the box is to give up silly notions of being effeminate.
By the time the process is over, all that will be left in the box are a group of people who are on hormones and who have undergone surgery. They're dumped outside of mainstream society, left to fend for themselves.
They're all guilty of the same crime
"Transgender” is a magic word – it can be twisted to mean whatever you want. It can include only the people you love or just the people you hate. It justifies any action, policy or myth.
The Abnormal Word
Remember GLSEN's definition of the term "transgender":
“A term used to describe people who transgress social gender norms.”
Transgress? Transgressing is definitely illegal. Social norms? -- that would be how normal people act. Anyone who transgresses norms is definitely abnormal. According to transgender-ists, each of the people shown above is Really a Man breaking the gender law by wearing women's clothes. ...Drag queens, drag kings, female impersonators, etc. -- They all have the same abnormality.
The World Professional Association for Transgender Health (WPATH) is a large group of experts who have the final word on Gender (at least, they think so.) Since the 1950's, their Mission has been to stamp out transsexuality -- which they declared to be a mental illness ("Gender Identity Disorder" -- 1980, or more recently, "Gender Dysphoria" -- 2013). According to WPATH policies, transsexuals can only be diagnosed and treated by psychiatrists. Patients are given every opportunity to give up their wish to "change genders", even to the point of not allowing transsexual teens to enter puberty unless the teen promises to conform to gender expectations for their "assigned gender".
Expanding the Net
In 2001, WPATH decided to expand their Standards of Care to target not only transsexuals, but all "Gender Nonconforming People" -- ie, the entire transgender community. The change might seem odd, since only transsexuals seek hormones & gender-related surgery. Why would androgynous people and crossdressers need psychiatric evaluation & treatment?
Page 11 of the WPATH Standards of Care states that most patients treated "identify" as gay rather than "transgender" (meaning "transsexual"). In other words,"non-conformng" to "gender assignment at birth" is medical terminology that actually refers to all effeminate boys. The goal of WPATH's Standards is to "cure" effeminacy -- thereby ridding the world of gays and transsexuals.
In fact, Dr Kenneth Zucker, one of the primary authors of the Standards, treats his patients by restricting all access to items even remotely feminine -- toys, clothes, activities, etc -- while immersing the youth in an aggressively macho value system.
The New Gender Paradigm
...Unless it doesn't. There are a lot of people who hear "transgender" and think of "transsexual". In other words, they think "transgender" people all want to "change genders" by taking hormones and undergoing genital surgery. On the other hand, most LGB activists use the word "transgender" to mean androgynous people -- people who aren't "male" or "female". (Gender experts don't acknowledge the existence of crossdressers.
The problem with using one word to refer to all three sub-groups is that each group has different needs & priorities. Policies directed at one group will have unexpected consequences for the other two groups.
For example, the Gay, Lesbian & Straight Education Network (GLSEN) works to neutralize the hostility experienced by LGB students in American schools. For the past 15 years or so, they've tried to expand their services to include "transgender students". A guide entitled Where’s the ‘T’ in GSA? is part of that effort. The guide begins with "gender is a social construct" and adds that transgender people intentionally "transgress social gender norms" (page 6 & 7.) The recommended policy improvements include: designation of unisex restrooms, changing school forms to include genders beyond "Male" or "Female"; being flexible in gender pronouns, avoiding stereotypes, surgery shouldn't be promoted, and so on.
...Note that these changes would benefit only androgynous people, while creating a hostile environment for transsexuals & crossdressers. (By denying the reality of a transsexual's post-transition gender.) Issues specific to transsexuals aren't even mentioned (eg, transitioning, athletic participation, amending school records, etc.)
So why has it become fashionable to use the general word -- even when it doesn't apply -- instead of identifying the relevant sub-category?