I think people don’t truly understand the meaning of the words being “your brother’s keeper” or “kol yisroel areivim zeh l’zeh”. It doesn’t mean we are supposed to stick our noses into others business and pry, it means we are supposed to help when needed and be concerned about each other. But it has turned into prying and “HAVING” to know everyone’s business which is absolutely the opposite of being anov and eidel.
The only way to stop others from doing so is NOT to give them information, NOT to listen to L”H, and NOT to give them anything to talk about.