Thing is right, pavement riding and RLJing aren't always the heinous crimes they are made out to be. OK, in central London they aren't advisable most places, but less confident riders won't want to ride on some of the busier roads, and in some places, there's a flippin traffic light every 100 yards. You try getting somewhere in a limited amount of time without jumping the odd red light (y'know, the ones where no-one's about, there's no danger to anyone, those ones).
Instrad of just criticising the behaviour of other cyclists, why not try to understand why they ride the way they do, and work to integrte cycling better into the urban space? The Dutch don't have problems with loads of bikes everywhere, so why not look at what they've learned, and implement some of their ideas, rather than tutting furiously all the time?
By far the worst thing in any big city is the drivers of motor vehicles. Most are idiots.