Does participation in the Unicom Gestapo require the purchase of a uniform?
No, but I don't think it's unreasonable to expect people to use the frequency properly (meaning accurately, relevantly, and succinctly), nor is it unreasonable to ***** about those who don't.
I've had some nasty surprises and close shaves, thanks to vague or wildly speculative position/intention reports.
And I've heard or seen much worse stuff happen than happened to me. So I take this problem seriously.
Then there's the...
"Cowboy controller": somebody on the ground who's giving ceilings, wind and "active runway" reports. "Horseback" reports, without benefit of any sort of instruments, or any sort of authority.
"Lost soul": actually taking off or landing at some other airport with the same CTAF freq... or basically just mistaken about his position or altitude. The "cowboy controller" could get him killed if he listens to him.
"Rebel": goes NORDO, which would be OK if he didn't do everything in nonstandard and startling ways. When he does use a radio, it doesn't help much.
"Storyteller"... this one seems to think he's an ultra-cool airline captain addressing his pax on the PA, or maybe someone who has a speech impediment of some kind. Many pilots get "mic fright", too, so things can drag on a bit. Whatever their problem, they take so damn long you can't make your initial callup until you are on top of the airport.
"Machine whisperer": keys the CTAF-using automated weather report despite the fact that three others have listened to it in the past 10 minutes.
"Chatty hens": the ones who blither and blather with their friends on the CTAF as if it were their personal party line.