It's also the 2nd leading cause of death for 2SLGBTQ+ youth:
The Trevor Project’s 2022 National Survey on LGBTQ Youth Mental Health found that 45% of LGBTQ youth seriously considered attempting suicide in the past year, including more than half of transgender and nonbinary youth.
So there's a lot more suffering in general for anyone basically not white, straight, (and depending on circumstances, male). Autism isn't a death sentence. While people with severe autism struggle a lot more than most, they can have very good fulfilling lives. Source: My daughter (23) has (moderate) autism and her best friend (23) has severe.