Either they hired a very petite woman for the photos are these seats are way wider than the current standard. But I do have a fun fact as to why airplane seats are too narrow.

When they first started standardizing the seat width, the measured individuals hips to determine the seat width. The idea was that: ass goes in seat. The problem was that our shoulders tend to be wider than our hips. By the time the issue was discovered it was too late to make the seats wider.

I have no valid reason for why seats are still getting more narrow other than the airlines are greedy bastards barley making a profit.