Yeah, I'm questioning whether they were in the position to know that it was a "fake". Like you, I would find it astonishing if someone had gone out of their way to "fake" something like that. What's the point? I could see saying that the information was not correct, but that it was completely fake?
If there's some wicked, malicious, hateful troll out there who's so evil as to "fake" something like that, we need to find and expose the scuм.
I for one think it was real, but that the information was wrong, and/or the individual was distraught is saying that he basically died when doctors delivered the prognosis that Bishop Williamson could not recover and WOULD CERTAINLY die. So a prognosis of death mistaken for or taken as being tantamount to a declaration of death. Or "he's basically/effectively dead but just being sustained by life support." That makes more sense to me than a fake troll job.