There's two ways to end up bucking social trends. Be socially inept enough to miss the social cues from your peers. Or be analytically competent enough to realize when the rationale for some trends is bullshit and harmful so you ignore the social cues.

Since they never actually got to a measurable cause for autism, they just go off observable symptoms, which means analytically gifted children constantly trip the warning bells, and have to prove their social skills to excuse them calling out societal bullshit. And sometimes they make the proof circular where ignoring groupthink is considered de facto proof of being unable to understand the social pressures propping them up.