I can't help it...
I don't think you are proposing that it is the case, but...
I am afraid that the thought that the non-cycling public sees any of us as anything but dorks is out of touch (at least in the US)...
Have you considered that grown men (women too, but I usually see men) riding around wearing their super-hero outfits and riding a toy that is used by their hero is a positive image to most of the public? Heck, I'm a budding cyclist and I think some are juvenile. I know you aren't necessarily talking about a team kit (which is the portion I see as somewhat juvenile), but when people outside the sport sees anything cycling specific (like spandex shorts or a jersey), I strongly suspect that it is seen in the same way. They have no way to differentiate between the two, nor do they care to learn.
And as far as equipment... Do you think that most people see any real difference between a $4,000 bike and a *mart special??? If they give it any thought at all, what in the world would make you think that it is anything except "Why spend $1,000 on a bike when this $150 bike has all the same parts? Heck this one even has a kickstand." Don't think that telling someone your bike is worth more than their car will make them see you as anything but stupid.
I would hypothesize that in many areas of the US where "racers" are seen as old fashioned and full-suspension mountain bikes are ridden on the streets by people who wouldn't typically ride off road, that people assume that the 18 pound road bike that you are riding is old fashioned, and wonder why you don't upgrade to get the advantages of a suspenion. You are likely to be seen as less by the general public than the guy in 40 Year Old Virgin... but the good news is....
IT DOESN'T MATTER WHAT THE PUBLIC THINKS, WE ARE STILL HAVING A BLAST!!!