"When the people who are supposed be a source of safety and security are also the source of danger and insecurity, it results in “fright without solution.”"
... "basically, they are programmed to both approach and avoid caregivers at the same time. As a result, when these children grow up, they experience intimacy as scary.
When people try to be kind to them, they may freak out."
Me too. 
thanks for linking this. It really resonated with me, too.
I have done a lot of reading on RAD and stuff from when I worked at the behavioral center and this sounds totally like it would feed in
sounds a lot like some of the kids i worked with
Yeah, I've studied attachment styles before and relevant things, but I think this is one of the best worded pieces I've seen on it, particularly because it's so accessible.
BUT! I tell you what. Reading about how attachment styles feeds into intolerance of uncertainty and how that feeds into OCD, anxiety disorders, etc was fascinating for me. I highly recommend it.