Jim while I do not completely disagree with you, that is an issue, they also interviewed police and others in the "study." I think the biggest problem is what was asked for, what question was asked that this study was to identify. That is where most studies fail, either the question is so poorly worded that any info is faulty or the question is so leading that it only brings up particular sets of information and completely misses data that counters a preconceived answer.
This is one of the big failures of Government bodies requesting studies, they don't know the issue well enough to ask the questions that would have real meaning and find solutions.