Cyclists are are smaller and easier to pass than tractors. Cyclists are better than obeying traffic laws than drivers. Multiple police surveys confirm it. Finally cyclists are subject of so much abuse and straight up murder attempts on the road that it's reasonable to expect them "acting aggressively towards a car". I mean if you come swinging a heavy object next to me I may lose my cool as well.

1) Cyclist are on the right side of the road (not against the ditch/gutter/curb...), and easy to see past them to know if you can safely pass them.

2) Most cyclist do, some do not, same as drivers 3) Same as 2), and cyclist can be aggressive when your life is at stake. I think drivers mostly forget they are in charge of a dangerous machine.