Yes of course it matters. If he wasn’t lying and acting like an insane criminal for a decade or so, people would be inclined to believe him.

The guy acted like people with your same thought process could magically absolve him of his crimes and lies because he made a wild claim that he would be killed. He hadn’t said a goddamned thing for years pertaining to himself that was true. He was a lunatic and a murderer (rapist too iirc?). It makes all the sense in the world he would be lying about expecting to be killed too