The thumbs down wasn't mine, but I will answer the questions for you.
First off, two of my three children are avid urban bikers and I want them to be safe. Maybe its different where you are, the group has a bad rep here in Seattle. They've been known to block the road no matter what is behind them, including emergency vehicles and a guy trying to get his wife to the hospital. I fail to see how you encourage sharing something by attempting to hog it for yourself. Some of the people associated with the group have made some really asinine and rude comments about drivers. This is not helpful.
This even happens when he has the right of way, say turning left at a red light
I don't understand how this situation gives him the right of way.