While original PwdHash may be considered outdated and replaced by modern password managers there may be still few reasons to use it.
Here few insights to get you inspired:
it is pure drop-down popup; messing directly with password fields is error prone and fails off for multiple sites so copy-paste is solid option that works everywhere
both master password and generated passwords are masked by default; no more accidental reveal
there is no persistent storage, no one can steal and crack your password database
pure local operation that works everytime and everywhere - plugin installed and master password in your head is all you need
