There's worse things than being short. While being short is considered unattractive to many, having autism practically makes you a second class citizen. It's harder to get jobs, harder to have friends, harder to even function in general, more likely to be abused and taken advantaged of, companies like Autism Speaks portray autistics as a menace to society, people use the word 'autism' as an insult synonymously with the word 'stupid', and if you were born in the wrong place at the wrong time you would end up in a mental institution and forgotten about by your family or dead because you just simply either a burden on society or they thought you were possessed by evil spirits.
I'd much rather be below average height than to have a neurology that literally makes me a giant target for a very real kind of persecution. Count your blessings.