I tend to agree with your assessment.
It makes observation of Obama’s response to the event even more painful. If anybody can identify with Lanza’s inner thinking, it likely may have been Obama, but there doesn’t seem to be such a conscience.
The counterargument is that the Lanza family situation wasn’t brewing for 20+ years, but only for several, albeit in his early adult years, when he might have retreated into violent PC gaming imaginary worlds. Over 3 years he may have absorbed more from the imaginary world than reality.
I believe you are right on this being over the 3 year period. There sure is a lot to be discovered in this matter and hope there will comes signs for others to learn by.
Such a shame, and so many kids like Adam out here still.