Not sure what NOL means. Cyclists do get very indignant about various driving situations while cycling.

My guess is, the same thing happens while driving. For instance, doesn't everyone get a little peeved when another car seems to slow down for no reason, weave and/or seems to be going much slower than what the perceived flow of traffic should be or a heavily laden truck or big motorhome takes over like a clot in an artery. I'm sure that in such situations it's natural to wonder if these vehicles should even be there if they can't keep up with the flow of traffic.

There are situations where both cyclists and pedestrians share a "bike" path. Then, cyclists probably get annoyed when, for example, two walkers are walking side by side or are walking inattentively instead of politely hopping out of the way like a bunny.

I somethins feel sorry for joggers. They don't have the law on their side when it comes to taking a piece out of the side of the road -- no feeling of entitlement when it comes to sharing the road-- and, usually have to go "against the flow" for their own survival. You can tell from their body language that they've sometimes been hard put to figure out what an oncoming biker is going to do, e.g., try to insist on passing on the joggers right or left and cycling erratically because they're not very skilled at looking over their shoulder and moving over closer to the traffic to pass people on the side of the road.