Hypotheticals don’t have to exist, that’s what makes them useful. Is it possible that an axe murder could have kids? Of course it is, they can have sperm, right? So, it’s a workable hypothetical. We can then use it to illustrate how actions that hurt innocents are not necessarily right, just to punish someone related to those innocents.
We don’t need to ask the axe murderer anything either, we can check birth records. Like with the US covid propaganda scheme, we don’t have to believe the govt, we can check international news sources if we like.
You can conveniently forget about independent information sources, but that doesn’t mean they don’t exist.