Isn't there a difference between self-segregation and filter bubbles and how they're perceived? If I go to a woodworking class, I won't be surprised to see peo

Isn't there a difference between self-segregation and filter bubbles and how they're perceived? If I go to a woodworking class, I won't be surprised to see people who like woodworking. If I go to the supermarket and everyone is talking about and liking woodworking, I start thinking that everyone likes woodworking. A user explicitly signing up to specific topics are opting into a discussion. Filter bubbles are implicit.