Sorry I was not clear, please do not refer autistic people as “group”, autism is a spectrum and each autistic individual can be very different. Not all of us are emotionally unstable. This kind of generalisation is pretty harmful.

Again, the OP was not using a collective noun to refer to autistic people as a group, their post was about a single individual with autism.

Seems to be a miscommunication. I use they as a gender neutral way of referring to individuals as the English language doesn't offer a better alternative.