> Also pilot suicide isn't something new and the aviation world has tried to come up with several regulations to ensure it doesn't happen

As AI171 has shown, turning the engines off on rotation does it reliably and there’s nothing that the other pilot or regulations can do to prevent it.

You conveniently left out the part where he walked through a hole in the airport fence.

Airfields are expected to be secure areas. If you can walk through a hole in a fence there's issues.

Remember a guy stole an entire airplane a few years ago (RIP Sky King). Airplanes don't have ignition keys.