There are certainly twats that are cyclists. Equally there's an element of self preservation regarding moving forward from lights before they change and on cycling on pavements in narrow roads rather than being close passed repeatedly.
It really boils down to consideration rather than hard and...
How many drivers speed? 100% I'd say. How many fail to drive as taught? 100%. How many drivers are so impatient that they'd risk the safety of other road users, pretty damn high. How many drivers think that they have to immediately overtake cyclists regardless of road conditions and oncoming...