I didn't read all the posts, but I will chime in anyway. Most motorists are not educated enough about the rights of bicyclists on the roadways. bicycles have as much right on the roadway as motorized vehicles (with very few exceptions like interstates). People are supposed to pass by moving into the other lane when it is safe to do so.
All those who are pissed at bicyclists on the roadway are just selfish persons who are thinking only of themselves.
Out in the country we deal with bicyclists, farm equipment, old pickups, ancient drivers in ancient vehicles, etc.
The only people I get pissed at are the ones who are breaking the rules of the roadway like turning left from the right lane, driving slow in the left lane, texting while driving, etc.
I would provide an anonomous tip to the police concerning that rider. Nothing may come of it, but you will have done the right thing.