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Yep, but allowing a situation where one bad choice is so easily made which causes a crash involving completely innocent people is bad design. The crash is entirely predictable given the lane layout and differing speeds of commuter cyclists.
Groups of cyclists have cause to overtake other cyclists more than any other road users amongst themselves. All cars can do 30mph, so really there is little need for them to have to overtake. Cyclists speeds vary greatly, even at the "responsible" end of cycle commuting. Therefore any cycling lane along a long straight section of road should provide ample safe room for overtaking. That one doesn't.
But isn't there always a difference between design and use? From the video, the cyclist that caused the crash made a bad decision and tried to pass people too close, with a stream of traffic coming towards them.
Granted the path could be wider or the streams of traffic separated, but they just made a bad choice on how to use the lane.