“(unknown current hero -- generic security-vendor pattern)”
Bitwarden is the only major password manager that is fully open-source and self-hostable. This is the #1 reason buyers pick it over 1Password. But the hero does not lead with this -- it leads with generic "secure password management."
“The password manager you can audit, self-host, and trust. Open source since day one.”
Three verbs (audit, self-host, trust) map to the three buyer objections: "is it secure?" / "where does my data live?" / "can I verify the code?" Leading with open source converts the comparison shopper who opened Bitwarden specifically for this reason.