There are of course reckless/inconsiderate people across all walking/cycling/motoring. I am a motorist I try to be safe but sometimes I do silly things, I am not perfect. Some years ago I clipped a cyclist off her bike, I just didn't see her. Fortunately nobody was really hurt. In fact she got back on her bike and rode off but it left me shaken. I remember I didn't drive for a while after.
The issue for me is about safety not rights, cyclists have as much theoretical rights as anybody else to be on the roads, but we are talking people's lives here. The arterial roads of Stockport are really not a safe place to be for cyclists. This in part is due to inconsiderate/careless motorists and little to do with the cyclists although some of them seem unaware of the dangers, but whosoever it is to do with it still doesn't stop it being there.
I've got 3 friends who have been regular cyclists all their lives. They've all had accidents involving cars. On of them in his younger days was a competitive, racing cyclist and he reckons he's as good as you can be. He says this stuff that wheels says about being assertive and commanding the roadspace but it didn't stop him having a serious accident where he was hospitalized for a month and told by doctors that he was "fortunate he wasn't permanently disabled. He cycles from Didsbury to Manchester Town Hall every day. He's had several "come offs" he's not a young man but he won't give up his bike. I applaud that in a way but I also realise that he's compromising his own safety. His wife has begged him to stop cycling to/from work but he won't do it.
Surely, anybody can see that the roads of Manchester are not a safe place to cycle at 8am in the morning. There is no safe provision for cyclists and motorists together on most city/town roads. The act of getting on you bike and cycling on them is in itself reckless. You wouldn't roller skate on them so why cycle on them?