I was wondering if this was going to be Seattle related. Yup.
The traffic here is so utterly terrible that bicycles are, in many cases, literally faster than cars to get anywhere. This tends to upset drivers, who drive like crap, and generally refuse to acknowledge that bike lanes are places for bicycles, not for their wheels to sit. So then you have cyclists going past stopped traffic, who are blocked by some large SUV that literally cannot stay in between the lines because either the driver doesn't know where the right side is, or they don't care. So you have to stop, squeeze past, sometimes going up onto the sidewalk, because someone can't stay out of the bike lane. And, then, in other areas, people use the bike lane to try (usually unsuccessfully) to squeeze past traffic so they can turn right ahead, totally ignoring the bicycle coming up behind them at 15mph.
And then, logically, the conclusion is to be upset at the bicyclists.