Apostates have access to Russell and Rutherford too, for all the good it does.
The religion is nearly self supporting. Noone researches anymore. Doing it too well gets you in trouble. Nobody cares about doctrine. People know the overlapping generation is nonsense and don't care. The belief system is rotted away but the mental construction stays up. It is suspended by a central pole and that is this: The unquestioning acceptance of the authority of the GB in determining what is true.