Seconded. I noticed the staff member interviewed was a little annoyed as such behaviour but the way people are on the tube being 2 seconds ahead of people at the exit to the escalator means being a minute or so ahead by the exit as you don't get stuck on the escalator or barriers or if making an interchange it can the difference between making your train and not doing so which adds up, especially for main line connections
I wonder how many people realise that the quickest way in and out of the Northern Line at Waterloo is to use the western ( Bakerloo side ) flight of escalators rather than the newer eastern flight that was put in a few years ago?
Only a 30 second difference, but one I have used myself to great advantage on many occasions...
Rather memorably, once, a bloke got off the same southbound Northern Line train as me by the same doors, the ones which line up exactly with the way out ( back of the 3rd carriage ); he rushed off in a tremendous hurry and turned left at the top of stairs. I thought I could see an opportunity there, so I dashed up the other way and when I reached the top and was through the barrier, reduced speed to a casual stroll towards the escalators to the main line concourse.
Sure enough, Mr Rush comes charging through a moment later, does a double take and stops to ask how on Earth I'd got there before him...!!