Why are there greater mental health stresses on autistic people from gender-minority groups? To quote from the research paper,

“The increased rates of mental health problems in these minority populations are often a consequence of the stigma and marginalisation attached to living outside mainstream sociocultural norms (Meyer 2003). This stigma can lead to what Meyer (2003) refers to as ‘minority stress’. This stress could come from external adverse events, which among other forms of victimization could include verbal abuse, acts of violence, sexual assault by a known or unknown person, reduced opportunities for employment and medical care, and harassment from persons in positions of authority (Sandfort et al. 2007).”

Source: Ann’s Autism Blog: Autism, Transgender and Avoiding Tragedy