It is a little of both[1]. The question typically is which audience reads it. To be fair, I am not sure publicity is the actual reason they are censored; it is

It is a little of both[1]. The question typically is which audience reads it. To be fair, I am not sure publicity is the actual reason they are censored; it is the question of liability. https://xkcd.com/932/ https://xkcd.com/932/