Well, I agree with you generally, but not if you are also saying there was no JFK conspiracy. That one, there appears abundant reason to believe there was a conspiracy (more than one person acting secretly in concert with another.)
That isn’t to say that all JFK conspiracy theories are right in their details and scope, but that there was a conspiracy at all seems reasonably certain.
That’s shown by very simple facts
like the clear entry (as opposed to exit) wound at the throat, not consistent with being shot from behind but consistent with being shot from in front.