So the article says that but doesn't cite anything saying that. The only thing it cites is an article that doesn't say detransitioners is growing but that half of detransitioners felt like they didn't have adequate mental healthcare evaluation. Which, considering the state of mental healthcare accessibility and funding in the US is no surprise.
And again, the rate of autism diagnosis is going up, as us tye rate of misdiagnosis. But that is almost entirely because autism in adults, especially women, is poorly understood. It does not mean the new people being diagnosed were never autistic, or that tye new diagnosis are invalid because a small minority were misdiagnosed. Same is true of gender dysphoria and its treatment.