There's finally a positive comment. Here's a portion of it:

"... if, as a cyclist, you want to model behavior that captures the imagination of pedestrians and drivers around you, and thus influence them to consider cycling themselves, then you need to shed the chamois. If you're looking cute, wearing everyday work clothes, casually cycling an upright bike to the office, you are much more likely to subconsciously influence someone to consider cycling. When we're all sprinting around downtown in our spandex kits, it's much easier for "othering" to occur — pedestrians and drivers won't see themselves in you."

So -- if I want to be a cycling advocate, I have to spend a jillion dollars on one of those heavy Dutch bikes and (this may be the hardest part) look "cute."