Is it time to start calling out bad cyclists?

Calling myself out (I think)
Number 2:

I'm at the lights North side of Blackfriars looking to turn left down to the embankment with a sole cyclist sitting further left than Scargill. As I've started doing, I tell him I'm turning left. He says I should be behind him.

"No fam. If you're going straight ahead you should be further over to the right in the cycle lane, if not, in front of the next lane in the middle of the cycle box"
He points at the paint, "look at where they've painted it. Im in the right place."
I ask "how much real thought and cyclist consideration do you think went into the the paint? They've given NO give way priority to cyclists on the junction."

He's just not having it. According to his blinkered view point all cyclists, in theory, would have to queue in single file along this dangerous stretch, when in reality there's enough space to at least go two abreast dependent on those going left and those going straight ahead (and possibly right). I switch off and zone out. Lights go green and I go about making my turn. I get t-boned by him.

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I'm not sure that you were in the right here. His story is probably ~~~

"So, I was waiting at the north side of the Blackfriars Bridge with no other cyclists around. Although I was going straight on I had stopped over by the kerb so I could put my foot on it and so I didn't needlessly piss off the drivers behind. Another cyclist comes up alongside me to my right and tells me he's turning left. I ask him why he didn't pull up behind me, since he doesn't know which way I'm going (I could have been turning left too for all he knew). Anyway, we have a bit of an argument and he tells me that I should put myself in in front of the cars, although I can't work out why. The light goes green and despite the fact that he now knows that I'm going straight on the idiot cuts right across in front of me and takes out my front wheel."

You were right to tell him that you were turning, but why didn't you pull up behind him? And why did you then cut him up? This happened to me the other day by someone who didn't have your good sense to mention (or signal) that he planned to turn.