It's a nice thought, but I'm not for it. I don't often wear clothes with lapels, but in addition, I think that it does not address the underlying issue--acceptance.
Why wear a pin? Perhaps a person would feel more accepted by being able to recognize others who share the behavior and the secret. Of course, the secret would come out (it wouldn't take a celebrity; it would just take a few friendly questions, "what's the lapel pin stand for?"). Then the gossip-mongers would have a field day and it would surely make a major feature on FOX News.
Lapel pins and the secret society would get the attention, but acceptance would be the real issue.
I'm for wearing our dresses and skirts, sans lapel pins.