Back on topic, I am very careful about passing non ebike lycra riders, I try not to,but often have to,and have never had abuse.
I get abuse on the tow paths/shared routes, for ringing my bell, for not ringing my bell, just being there by walkers who insist,wrongly, that bikes are forbidden. I get abuse from the drunks who congregate under the canal bridges.
The most polite are the Horse riders who usually say thank you when I pass with consideration. I always say thank you, and this usually completely disarms any protest.
I have had walkers on shared routes who deliberately block the route, equally I have had riders riding no hands and texting and almost colliding, usually no helmets. Motorbikes on cycle paths, petrol powered skate boards on cycle tracks, Horse and cart on a cycle track etc
As with many things, the etiquette lags behind the real life situation.