Here is the area of that video in Skokie, Illinois. I live a few towns over and am familiar with the area. The biker is riding west to east along Oakton Street, a fairly congested and major thoroughfare. The video starts just over Edens Expy (94) at the intersection of Oakton and Gross Point Road. This is exactly where the street narrows. The video ends right at Skokie Village Hall.
https://www.google.com/maps/place/S...87,16z/data=!4m2!3m1!1s0x0:0xc25a57c90059e4ea
The road narrows in that area while remaining two lanes in each direction. There is enough traffic congestion in that area to make it difficult for cars to pass a bicycle. A relatively slowly accelerating bicycle, even one as fast as that guy was, will frustrate car drivers unable to keep up with accelerating traffic. A wider lane would allow cars to move around a bicycle easier, which drivers often do in this area in a courteous, thoughtful, and safe manner. Cars easily move around bicycles when the lane is wide enough and the bicyclist moves over but as Ns1 mentioned, there was not enough room for a bike to move to the side and have vehicles go around safely, so the biker needed to take center lane, which is fine.
Except that he shouldn't have been there in the first place. For his own safety.
That area has a few bike paths, one very nice and long path in particular. That area also has parallel side streets and designated bike lanes that could be traversed just as well and much safer for getting from point A to B. Riding a road bike like that is not about getting from point A to B but for exercise.
A bike rider needs to stay out of such traffic if they value their safety. He put himself directly into congested traffic. It is similar to a jogger deciding to jog along a densely packed road with foul air from vehicle exhaust when there is a perfectly good neighborhood right there to safely jog within, out of traffic and with better air quality. The decisions people make regarding their safety are not always the correct ones.
If I was riding that route, I would have crossed the intersection at Gross Point, taken Central Ave south, then taken the first parallel street east, which is Kirk St. Then I would have continued along Galitz, crossed Niles Center Rd to follow Lincoln Ave. Then to continue traveling east parallel to Oakton, I would have taken Babb Ave north to Louise St to its end, then rejoined with Oakton to cross the highway at Skokie Blvd.
No, quite the opposite.