This being said, security through obscurity is never an optimal solution, but again going back to my "safe" analogy (not unbreakable, just hard to break). If a hacker wants to change the password, it takes a few clicks to locate a site where the user could be logged in. Then the clicks required to get a new password. Add the delay of email reception and so on... It takes more time and effort to do that than just click "show me all the passwords" and take a photo with a smartphone. Plus doing so will give you 1 password only.
About the keyboard presses count, let's say I use both mouse and keyboard.
ctrl+, (shortcut to settings) click to advanced click to manage click show
It's 4 operations. In my opinion, it's way shorter to do that and get ALL the passwords of a given user than try to change the Facebook password. Again, and I'm really stressing this out, it's not about making an unbreakable system. It's just making it a bit harder to break.