That depends. If you had prefaced your remarks in the following way, then I would read it as making a universal claim.
"Bluntly, every person I know who's expressed these kinds of sentiments is guilty of the same mistake: [living outside southern California]."
As I already stated, I read the OP as if the latter. Despite the often pedantic nature of HN, there's a lot of room for nuance and interpretation human communication.