Because being trans has zero to do with sexual attraction. For the tiny percentage of people who are actually trans, it’s usually the result of an endocrine disorder.
Who knows? Maybe this sick bastard pretended to be trans too so he and his girlfriend could get their kicks killing an innocent person.
Most trans people tend to associate with other trans people.
A lot of people really cannot wrap their heads round the simple concept that all four of these things are separate.
Sex - your chromosomes and body parts.
Gender presentation - initially, this is how you are presented in society by your church, your family, and your family, based on your sex. And, how you’re conditioned, if you’re a boy, not to play with dolls or wear dresses.
Gender identity - We all hit an age where we want to develop our own image with our own clothes, hairstyle and taste in music. But we usually don’t challenge our gender. Clearly though, there are differences within a gender - sporty jock boys and nerdy preppies think differently.
Gender expression - how you deal. BA Baracus was baffled because Boy George had long hair and dressed kinda like a girl. Technically Boy George was never a transvestite nor a transsexual, he was a gay male cloakroom attendant at the Blitz Club in London who, like David Bowie, created his own androgynous fashion style.
Transgender - people who are either intensely revolted by the sex they were born with (dysmorphia) or are really unhappy with the presentation of it.
Sexual orientation - straight, gay, bi but don’t forget asexual (nearly everyone is asexual until late childhood but some people never have a sexual awakening).
Romantic attraction - one’s ability to have romantic relationships as well as platonic / familial ones.
Once you wrap your head round the idea that these things are different, it’s easier to understand.
A girl who might be asexual and unromantic might be sick to the back teeth of periods , boobs, dresses, judgey girl cliques, perving boys, etc; express herself by dressing as a boy and adopting a boy name purely to put that stuff off, and start looking for other teens like herself.
Because we’ve spent the better part of fifty years saying that this behavior is “queer” ie WRONG, the girl is pressured into identifying as gay ) doesn’t fit), lesbian (also doesn’t fit), or trans (closer but still ain’t right).
The idea that she’s maybe just an unhappy girl who’s had it up to here with the boob job / nose job / groping / period pains and simply wants off that train isn’t allowed by the LGBTQIA+ Mafia any more than it’s allowed by the traditionalists.
So she meets up with an “ally” online, goes to meet him, and gets murdered.
So what motivated the murderer? And what could society have done differently ?
She was brainwashed by her school to virtue grandstand to pretend something she wasn’t.