Not only that, there are parts of the world where FB provides the internet for free and its prohibitively expensive for those people to access the internet otherwise. You can’t realistically say those people have a choice.
That’s not even broaching the topic of whether or not we should give people “the choice”. Generally things that are known to be harmful if used in certain ways aren’t allowed to be sold to the general public. We take away “choice” all the time to protect the average idiot, I don’t see how this is any different.