Look, autism is not necessarily bad for you, so it makes for a really silly insult
Beethoven wasn't autistic, he was a
savant. Savants are born without the capability of multitasking, so it makes socialization difficult but allows them to employ the full power of their brain into a single activity, and in Beethoven's case that was playing the piano.
If you're autistic and attacking girls on an internet forum it's absolutely bad for you.