re: Alaskan Airlines plane had an issue tonight as part of the plane fell apart in the air

this was not an exit row door. It looked like it from the outside, but Alaska Air chose to have it look from the interior like a regular window seat. So it was NOT a question of the crew not fastening the door properly. It wasn't a door.
There was nobody sitting in that window seat on this flight. What a .....coincidence. The boy whose shirt was torn off him is lucky to be alive.
I wouldn't fly in one of these planes!