This is a tricky issue, trans women in men's prisons are also at risk
"Also at risk"
The fact that you equate cherry picked single instance anecdotes as comparable to entrenched violence and discrimination against trans folk as being somehow comparable is the part that makes it transphobia.
Murder was hyperbole
It was, yeah. Despite her "murdering" the opposition, from the very article you linked, Australia finished 5th.
There are 7 players on a handball team. She scored 23 goals across 6 games, for an average of just under 4 goals per game (3.83 to be specific).
The total goals scored by Australia in those games was 160, which works out to an average of 3.81 per Australian player across those 6 games. Her "murdering" of her opponents consisted of having a 0.02% higher average than her team mates.
The fact that you parrot lines like "murdering" and look at videos designed to make it look open and shut, whilst not bothering to investigate the reality of the situation is what makes it transphobic.
The whole article is discomforting and worth reading. But, while WPATH (what is supposed to, and claims to be and independent science based organization) was creating their guidelines:
An article posted on the economist, who has Helen Joyce, a vocally transphobic journalist as one of their senior staff. Linking to an article that has been mostly circulated on various transphobic websites, calling out WPATH for being biased and getting in the way of evidence based research? Whilst defending the Cass review, which has been widely called out by many international medical bodies for its own bias and inconsistent approach to evidence.
The fact that you're worried about WPATH as the real issue here is telling...