His whole post is so assuming. Like he not only knew Lanza personally but lived in his brain. I wonder if he ever took the time to really know YOU!

I don't mean to bash anyone and I can only judge him by what he wrote publicly but he really comes off as someone who is willing to say anything in order to appear an expert. Must have been quite the pain and irritation to live with.

Don't feel ashamed of what people might think of you, he should be ashamed of what people might think of him. You appear to have intelligence, he doesn't. There is always someone who thinks they are an expert with tiny pieces of information and the rest hearsay and stuff made up to fill in the blanks. After all even the press don't know the whole story (though some pretend too) and maybe we never will know (especially if he wasn't diagnosed)but we do know that your ex thinks he knows everything even though the experts dont. He ran with that and came across as a fool. Let it go roll off your back and care nothing about it.
Glad you're separated, someone with an ounce of compassion would be better. Don't let it get to you. I have Aspergers and I'm proud of it whether you have it or not. Hugs.