WTF with Mozilla?!? Rated 1 out of 5 stars

This is baby poop (BS), why the hell firefox doesn't have this auto shutdown as built-in option?
I mean, the effort of the users updating this plugin is awesome but it just means that firefox developers are not watching the needs of the users who use this browser...
It would be very nice to contact them and say this ...

This user has 2 previous reviews of this add-on.