Another would be sharing a encrypted file using password-based key derivation scheme over a unsecure channel. This could mean even if you use a client side pass

Another would be sharing a encrypted file using password-based key derivation scheme over a unsecure channel. This could mean even if you use a client side password encrypted (Think Matrix, Bitwarden) with a supposedly "strong" password. The password is much much much much less secure. One thing though with the database dump scenario is, password managers by design discourage password reuse, so bruteforcing a password in a past leak might not help with the current passwords. Which imo makes using a password manager (albiet a bad one) still a net positive.