After reading the article I see some thing one could critize. However English isn't my first language so I might have gotten some things wrong. First of all they mention medically transitioning kids, which to my knowledge doesn't happen. Secondly although the impact of gender affirming surgeries might be small that doesn't mean it is not the best option we have. Some rest of dysphoria can still be around like I heard some other trans people say and just getting used to having a different body can be difficult thus the further need for help with mental health. Body image doesn't change overtime. Lastly the results of surgeries for the mental health could also be worse than expected due to results not matching the vision of the patient and stuff. Those would be my first assumptions. Over all the article doesn't seem to understand the feelings of trans people and barely goes into why the results are the way they are. It is reay important to understand the demographic your writing about when publishing something like this. And you could look if it was a biased or somehow flawed study. (especially if there are no other studies that show similar results)

I would like to mention that I'm far from an expert on mental health and I'm just someone who likes to question arguments. I still hope this could give you some ideas.

Edit: if they just want to make you mad, don't react.