Sure it isn't the majority, but it is still a good number of people.
I do find it frustrating when this occurs. I don't think it is entirely my fault.
For a counter-example of how things should be: I have just spent around 1000km on Swedish roads. Car drivers would slow down, keep distance behind you, wait until there was a spot that was wide enough to pass with sufficient visibility, and then calmly pass, giving us a wide berth. I had a single close pass in two weeks.
- Motor vehicles are inherently dangerous, the larger they are, the more dangerous they get, and their drivers should be in control of their emotions. Road rage is frowned upon for a reason
- You don't know if it's a recreational activity or utilitarian transportation.
- It's not that commenter that is making these people's "frustration" at their brief interaction dangerous
they specifically stated that they are a cyclist commuter - i.e. they are using their bike to get to/from work. This is at least as good a use of road space as most drivers.
edit: maybe OP misunderstood due to comment edits.