It certainly did a good job of containing facebook - It logged me out and then prevented me from signing back in again. Even after disabling the add-on.
So I guess it depends how much you like facebook. Or if you want more free time and an enforced social media detox...

after starting i can't log in to Facebook

I feel like Mozilla is the only web browser company truly interested in our privacy. Thank you a lot for everything you're doing!

C'est ce qu'il nous fallait ! Je n'ai pas Facebook et quand j'ai appris que même sans compte, facebook me pistait, j'ai été horrifié.

foarte bună

i haven't used it long enough to comment on it this time but i liked it the last time i used it