I imagine something about that caused certain lists to be populated in certain ways, and no linux user cares enough about Facebook to help them correct the problem.
I cared tiny bit. I even went out and bought a phone so that I could "prove I was a real person" or whatever to try to make a FB account. Account creation failed, my IP was banned, and I just blocked every FB domain and haven't looked back.
I imagine something about that caused certain lists to be populated in certain ways, and no linux user cares enough about Facebook to help them correct the problem.