You're confusing deductive reasoning with inductive reasoning. But I wouldn't even call it inductive reasoning, as it's really just an empty hypothesis where people are putting what they want to be the truth into the holes of our knowledge...or hell even outright rejecting evidence, like qanons do.

And, again, Ive already agreed that they don't 100% believe it. But arguing that they don't think Boeing had this person killed is just ignoring what they said and assuming what you want.