Ubiquitin, it would depend on the motive.
Sam, depends on who’s doing the speaking. If a Lakewood guy would give mussar to other Lakewood guys, or Teaneck guy to other Teaneck guys, that might be helpful, but when a Lakewood guy talks about the poor middos/ahavas Yisroel of Teaneck people, or vice versa, it just promotes sinah.