The author looks down on browser's password managers but to me they seem like the perfect solution -- relatively safe, with reliable auto-fill and, most importa

The author looks down on browser's password managers but to me they seem like the perfect solution -- relatively safe, with reliable auto-fill and, most importantly, already installed and configured. Syncing is just a matter of moving your profile to another computer. Am I missing something? Is there some inherent flaw in these managers? Firefox will even encrypt the passwords by default and allows the user to set a master password. Exporting passwords is a little annoying, but how often is there a need for that?