Wow! I know that street and it is narrow and lots of people walking and biking etc. Most bikers in portland are in one of two camps I have found:
(1) respectful (probably like yates), or
(2) disrespectful, type A are arrogant and believe cars should get out of their way, ride in car lane even though there is a bike lane etc., type B are idiots who just blatently disobey every road law.
I would guess based on what I have seen that about 80% are in the respectful category and 20% in the disrespectful. The vast majority of bikers here are nice people and are very respectful. I see them every day.
I both ride and drive but being a true motorhead I am definately biased towards cars and when I ride my bike I do it on no-traffic streets and assume no car can see me or will stop for me.