Is it time to start calling out bad cyclists?

I wondered why they would go to the trouble of creating what appears to be a very nice cordoned off bike lane, only to put barriers in the middle of Upper Thames St - then this morning sticking a concrete block in the middle of the bike lane entrance, giving just enough clearance both sides?

Yesterday morning (north side, heading south), there were police explaining that it was fine to cross (in both directions) but we shouldn't use the left-hand lane whilst heading north... By the evening they'd almost entirely coned over the central dividing line.
???