No and no. Pineapples and flamingos do not indicate that those RVers are swingers. It means that they like pineapples and/or flamingos. This is a myth put on by people who want to believe that there is some sort of tell with those “in the lifestyle”. There’s not.
I know a few swingers in real life- they find partners like the rest of us find things- Facebook groups, web forums, subreddits on Reddit, clubs, and good ole fashion word of mouth.
if you’re eyeing up some fancy pineapple lights or yearn for flamingo decorations- have at it. You won’t get an uncomfortable knock at your door.