Wearing cycling clothing, but nothing like a team kit and road bike whipping down, might have a lot more people responsive. But I don't necessarily dress for impressions. I just focus on comfort, budget and safety.
Honest, I personally have less respect for cyclists who don't have bike lights, wear black jackets, black everything and black helmet. And they hope drivers will see them at night? I've almost crashed into such cyclists.
For last 3 Canadian cities I have lived right near heavily used MUPs. Yes, I'm sure the residents get tired cyclists...and yes, many charity bike rides, runs....use these same routes..near where I've lived.
I get used to it...and also on weekends I make sure I start cycling from home before those big rides, runs/marathons start.
Yes, that is the "price" of living close by...but honest, it doesn't happen every day. We have to keep it all in perspective.