Possible. I can't argue with your logic. So what should we do? Ban medications that are helpful for millions?
For starters, there is a financial incentive from the federal government to get kids on these pills (ADD/ADHD Dx). That needs to end. There are people taking them that have no need to.
Secondly, mass shooting have all happened right after being placed on them, right after a dosage change or right after being taken off them. I'd say 2-3 days of inpatient observation for any of those events is called for when putting anyone on SSRI's.
-t