Reread the article, and you appear to be correct. They state he is an older man. Cannot see his pony tail. But quite frankly, that older guy up above appears to be a professional operative to me. Just an impression. Working for some government or professional organization. He has a lot of purpose and planning in his walk and dress. The young guy appeared more Occupy Whatever to me.
I agree the gait is purposeful.
It reminded me of someone, and for a while I could not place it.
I saw that gait ironically, on an episode of the travel channel with Andrew Zimmer, where he was staying with and living with a bush tribe.
Near the end of his stay there, the local tribe held a roast. Not a cooking roast. They were roasting the film crew - making good natured fun of their mannerisms. One lady’s role was to imitate Zimmer.
She adopted a wide armed, exaggerated way of walking which looked exactly like that.
Only time I remember seeing someone walk just that way.
Not sure what it indicates.