Emergency exit doors over the wings don’t have hinges connecting them to the plane so they are kind of a ‘plug’ but I have never heard them referred to like that.
It takes 2 hands to remove those doors and set them inside the cabin or toss it out. One of my flight attendant classmates had a heated discussion with a one armed man who wanted to sit in the emergency exit row, insisting he was completely able to open the door with ONE arm. Uh huh.
That’s not true anymore. B737 New Gen (700, 800, 900, Max) have gull wing emergency exits. They are hinged at the top and electrically deactvated when in flight.
Main cabin and aft doors are still plug type.
My understanding is this was not an emergency exit, rather a fuselage section that has structure for an emergency exit but is not used as an exit.
I’m a couple of years removed from the industry but am type rated in the B737 and had initial instruction in the MAX before they were in active service.
EC