There is a faction within the cycling community that behaves poorly on the road, just like there is a faction in vehicles who are averse to cyclists and will harass, threaten, etc... anyone on a bike. Neither is a majority within their respective groups.
Bicycles are considered vehicles, and subject to the rules of the road. That means obeying traffic signs, signals and the like. If it is clear, I might, on occassion, slow but not stop for a stop sign on the rural roads. But I understand I do that at my own peril. If a vehicle is coming, I stop. Wish I could say the same for some vehicles. I went down HARD last November avoiding a car that blew a stop sign directly in front of me. Options were to hit the deck or become a hood ornament. So it cuts both ways.
I drive a lot, too, so it's not like I am anti-auto. and I always wear a helmet. Cannot afford to lose any more IQ points. I'm already running a defecit.