Because poor usability just is a vuln. If you make life unlivable, either for yourself or for a group of people, you can expect security to fall by the wayside

Because poor usability just is a vuln. If you make life unlivable, either for yourself or for a group of people, you can expect security to fall by the wayside. Real-world security isn't just about digraphs and compendia of named (known!) attack types, listed together with mitigations. (Although all that certainly helps!) It is, unfortunately, also about maintaining and managing personal systems. No matter how scaled and nuanced, the security of any organization comes down to personal habits. Password managers make it significantly easier to track, prune, maintain and manage identity across sundry & clastic platforms, and therefore, improve security.