Is it time to start calling out bad cyclists?

I also ride like I rode my motorbike. It certainly has made me more observant. It still doesn't stop other people thinking "oh it's only a bicycle", "he'll stop"- "I've plenty of time" etc. The sounds of vehicles make people think twice about making a move.

Not directly related but what is about people that choose to cycle that rarely see fit to allow others to go i.e. I'm riding along, I see someone looking to pull out from a side road or turn right across my lane and I stop, gesticulate to allow them to go but cyclists still continue to pour through confusing matters??