Fox (and, indeed, at least one other Rupert Murdock property: the New York Post) didn't help, but if I were in Salah's place I'd be most concerned about the ar15.com nutjobs who were trolling him: https://news.ycombinator.com/item?id=5573281

In any case, no number of intermediaries would absolve "the subreddit" of responsibility if something went tragically wrong as result of their actions. Mob psychology and the diffusion of responsibility certainly makes people feel like it would.