Seattle is (or was) great at many things but as someone who has lived here all my life, I disagree with this categorization. From what I know of Portland, it describes that city even less well.
We're politically liberal (sometimes to a fault), not any more optimistic than average (and quite possibly less), and definitely not what I'd call "energetic". It'd be more accurate to say the PNW has positioned itself as the laid-back alternative to SF. I've known a couple companies who have left the area because they couldn't find enough people here in their particular field who wanted to really work hard.
On these particular axes (which may or may not be important to you), Seattle/Portland simply aren't in the same league as San Francisco or New York City. People in those cities are mercilessly open, optimistic, and energetic.