This. Plus another factor is that “mass shooters” are usually boys from homes with no father. So they were never raised to respect the firearms and participate in what we call the gun culture. In an historically normal gun owning family, the father would teach respect for firearms, safety, etc. But when boys are raised on the street, that never happens.
I’ll bet if you had access to everyone’s medical records and social media accounts, you could scrub them and identify the ones on the right meds and with the right mindset to shoot up a place.
I bet it wouldn’t be hard to assign them an AI bot that spun them up at the right time.
The nice thing there is it’s all automated, no one to blow any whistles.
Conspiracy theory you say? Maybe, but it is technically possible and the exact same things have been done, a decade ago (remember Target advertising to pregnant women, before they knew themselves?), and the wealth that is at stake is very high.