There are no meds for "autism", there are meds for health issues that autistic people are more likely to have, which autistic people shouldn't take if they don't have those health issues.
As for it being categorized as a disorder.
Homosexuality was classified as a mental disorder in the Diagnostic and Statistical Manual of Mental Disorders (DSM) beginning with the first edition, published in 1952 by the American Psychiatric Association (APA).
Would you have said "I'm not hating on homosexuals, just think we should take things for what they are" in 1952?