Honestly? It's not a real reason to ban someone. It's obviously a very toxic and horrible forum and you're too good for a place like that. I completely understand why you are hurt - you should be hurt because that's a disgusting thing to say and it's not acceptable under any circumstances at all.
You know that we adore you here just as you are and wouldn't change you for the world. If anything, the world needs to change and stop being so horrible for no reason. Just try not to take it too personally and try to understand that there are some really bad forums out there that are going to hurt people no matter if they are autistic or not.
To be very honest, it makes me incredibly angry that you were treated like that so all I can say is just be careful of which forums you join because some of them are just plain nasty. Take care
tackles ox