Yeah, this doesn't sound like a retcon to me either. It does add something, and given everything Jason's been through being raped, for instance, would actually pale in comparison to being killed and buried alive and think his family forgot him.
But this always seemed like the problem with Jason to me. There was a lot of positive stuff that Jason got from Bruce and being Robin, but of course his previous life was still a factor. Some feel this says something about Jason being born bad or having bad blood, but it never seemed like that to me. It seemed more like Jason had years of bad treatment in his formative years that effected the relationships he was going to have. And while there were great things that came from his training--he did I think love having someone believe in him and challenge him and push himself to meet those challenges--eventually there was other stuff that was going to come out too. I've known people who work with kids from these kinds of backgrounds and "don't ever expect them to be grateful" is rule one.
Hell, I was just reading Inheritance that even has an interesting take on stuff Dick didn't deal with by being Robin that comes out later. And Dick went from stable, loving home to stable, loving home. Jason was just at the age when he was going to have to deal with all this stuff when he died. And frankly, post-Crisis there were things going on in the Batfamily that would have made it hard to trust that too.
Yeah, I have always thought Bruce's yanking the kid out of a bad environment and sticking him in the Robin suit a recipe for trouble.
And yes, it's painfully ironic that at the same time they're doing this they're pushing Grant Morrison's violent brat of a Robin. How are none of the characters making that connection? Even if Dick would be a healthier person to deal with Damian, probably, I still don't see where making him Robin isn't expressly rejecting the lesson of Jason.