The screenshot was taken from a live stream at 1:30pm on a Wednesday, not during long-weekend rush hour.
The Gardiner, just like the 401 and the DVP, are a traffic nightmare nearly all the time, yet they don't have bike lanes on them.
This isn't some strange coincidence or conspiracy.
Car dependency, rather than people riding bikes, taking public transit, or walking, is the real problem causing traffic and gridlock.
This is factually incorrect. People driving cars badly can worsen car traffic, however it is far from the primary cause of car traffic.