Well, I was thinking more about some studies that show it's the difference in speeds on the road that creates dangerous situations, and not the speed itself. So if the traffic is moving at 30mph, there is no problem with a cyclist cycling at 30mph. But if they are cycling at 30mph next to standing traffic, that's really dangerous. If you watch the gif it looks like the cyclist is travelling too fast for the conditions of the road - a pedestrian has to literally jump out of their way, and there's no time to react to something like an opening door - in fact, there's a pedestrian crossing after that taxi, if there was anyone crossing the road there's 0 chance that cyclist would stop in time.

I would feel exactly same way if it was a car driving this fast next to standing traffic - the same sort of danger.