Given the uninformed, gormless and lazy "I pay road tax" argument that we've all heard ad nauseum, you could see how said driver(s) would take offence to a 'scummy' cyclist taking the lane without any signal or acknowledgement. When was the last time you saw any smiles, thumbs up, a wave or the words "thank you" from a cyclist to a driver (or even to a fellow cyclists) last week, month or year?! I rarely do. It's human psychology that we like being thanked and recognised for the little things we do. I firmly believe better manners would ease many of these potential confrontations. Next time you find yourself going through a pinch point get into position on time and try looking said driver in the eye with a thumb up in advance.
More of this. Well articulated MG.