This study seems to me to be a retreading of old ground by cis people. Like I can appreciate getting more data that yes, trans people aren't freaks, but the study just seems like a massive "duh".
Why did they think hrt changed vocal chords in trans women in the first place? It's pretty well known that hrt cannot take away the things that first puberty already changed. I also don't like how the article presents voice feminization surgery as if it's a common and normal choice for most trans women. Even beyond the implication that trans people need surgery to be successful in their transition, voice feminization surgery is extremely risky and is only ever recommended in extreme cases. If they couldn't even do that amount of research, it doesn't make me feel confident that the study is all that worthwhile to think about.
Secondly, why only focus on trans women? It'd be more interesting if they included trans men in the picture since on their side of the fence, hrt actually does affect their voice. It would be interesting if the study compared their trans participants with cis benchmarks at all, actually. Maybe the study itself does that where the article does not, but for reason #1 I don't feel like it's worth my time to check.
Lastly, the actual results of the study are pretty "duh". Just by the physics of how the human voice works, it's pretty easy to see that yes, having a breathier and higher pitched voice will lead to having thinner vocal folds. Because having thinner vocal folds is what causes those effects on the voice in the first place. The study mixes up the cause and effect here, so it isn't exactly groundbreaking research. What would've been more appropriate to examine is the vocal chords at rest compared to either cis benchmarks or the speaking voice average. Since the conventional wisdom is that voice training can't really change your voice at rest, that would be more interesting to look at.
Overally I appreciate having more data about trans people, but didn't find the study or article to be particularly knowledgeable about trans people in the first place.
Gonna have to disagree here. The social aspect of it all is just as important of the medical aspect. While there are trans issues that are mostly medical in nature, there are equally trans issues that are more social in nature.
I'm not sure what contexts you've seen truscum being used in, but from what I know it's a term used for people who insist on a medical diagnosis in order to be trans. The problem with this, imo, is twofold. There's a long history of medical gatekeeping that enforced cisheteronormativity in order to get a diagnosis of gender dysphoria, leaving out all other forms of self-identity (among a whole host of philosophical issues). And the second is just the lack of understanding and research of the broader medical community. Treatment guidelines are all over the place, often misguided, and usually inadequate to achieve the goals of the patient.
Truscum rhetoric often reinforces cisheteronormativity which is mostly antithetical to what being trans is about in the first place. That's not to say that the trans community doesn't struggle with medical diagnoses or that that's not important, but to use a diagnosis as the benchmark of what being trans is, is usually needlessly exclusionary.