All of those laws only effect other drivers if something bad happens. When cyclist break laws such as running red lights, making unsafe lane changes, passing on the right, driving so slowly as to impede traffic, etc it directly effects other drivers; they have to react to it.
If someone in a car runs a red light it does not effect other drivers?
I find it less of a problem when a cyclist runs a light:
A cyclist braking the law is very likely going to get hurt the most if something goes horribly wrong.
The cyclist is probably going to make VERY sure he does not going to be in the way of something big and heavy made of steel on four wheels with the right of way.
A motorist who brakes the law is very likely to (also) hurt or even kill somebody else.