Correlation doesn’t imply causation - after all their own data shows the TSA fails to catch 95% of their own attempts to smuggle dangerous things through; and private terminals haven’t seen any incidents at all despite their lack of screening right?

Isn’t it far more likely that the reinforced cockpit doors made it pretty futile to try and hijack anything?

You’re asking for examples that indicate screening isn’t necessary and I provided one - all private flights are exempt and haven’t ever (?) been involved in such incidents. If they just “love” blowing up planes why wouldn’t they try and do so out of the private aviation terminals which have no security?