You're assuming people sample unifromly and at random from the population. People connect with similar people, form relationships in similar envioronemnts, so your social group is vastly more specialised than it might seem.
Autism compounds this greatly because of the double empathy problem, so one should expect an autistic person to have mostly autistic friends and to be in environments where the rate of autism is far higher
Autism compounds this greatly because of the double empathy problem, so one should expect an autistic person to have mostly autistic friends and to be in environments where the rate of autism is far higher