Where I work the FO is explicitly given the duty of coordinating evacuation from the outside and directing the passengers upwind of the fire, away from the flames, etc while the FA’s and CA make sure the plane is evacuated and coordinate from the inside.
Why do I feel like the Sun would blast a FO for simply doing the job the company and CA told him to do? There’s also plenty of reasons for a 4 bar CA to be in the right seat, LCA duties or a airline that allows/forces CA’s to fly trips as a FO.
Bottom line, inappropriate to roast someone with the word of a few drunk Brits on holiday and a zoomed out picture or two.