I work with autistic and mentally retarded children and adults and I do see a lot of behaviour, which is in somewhere in the trans spectrum. Are they transgender...I cannot say and neither can they, but their behaviour is exactly similar to mine, when I was younger...and similar to the beheviour of all you who read this.
Sometimes it makes me sad, that they are beyond any help. Then again, it might have been a blessing that their brain went more wonky than mine.