His other videos are about his views on cyclists who are not necessarily aware that they are doing something which could be dangerous. With this video, he's got a problem; the couriers are very aware that they are doing something dangerous, but his commentary remains about trivial things.
Like at 3.10, he criticises the rider for not indicating, yet why would you? Given that he is traveling fairly fast it would be less safe to remove a hand from the handlebar, and who would he be indicating to?
It would be much more interesting and worthwhile if he commented on *why* some of the riders are doing things. Like 'cycling on the wrong side of the road' (bad) should really be 'adopting a position which gives the most time to react and more options to do so' (good).