During the flight, Bertazzo allegedly told Rosario, “You know what to do” before removing his headset, arranging his belongings, taking off his seatbelt and exiting the aircraft.

... 'exiting the aircraft'.

Yeah that's... accurate, but seems like perhaps an overly neutral verb to use.

Yep, just stepping out for a bit, to get some air.

Fuck me, this is an actual dark comedy skit, I can swear I've seen some skits from back in the day where more or less this is the plot.

I guess all I can say is that I wish I could give Rosario a hug, what an awful thing to be forced into.

"He's taught many lessons, and this is the first time this type of incident ever happened. Everyone was shocked, he'd never done that before."

"Without incident" means literally nothing remarkable happened. For example, if he had been behaving erratically or threatened suicide during the earlier flight, those would be incidents that should've tipped someone off that they should intervene and not let this guy back up.

If there had been an incident, further investigation would be warranted to determine if this was preventable, and if so, who could have prevented it. The journalist is specifically highlighting that no one but the pilot appears to be at fault right now.

I.e. he waited for someone he knew could land on their own