Yikes. I mean, yes, in this sense you're right. We've never found conclusive disproof of the various conspiracy theories around the assassination and have been forced into a consensus that, y'know, Oswald shot him. But you don't believe that. And nothing is going to make you. So from you're perspective "we still don't know". WIV is going to be the same. You'll never get the disproof you demand, so you'll continue to disbelieve the consensus opinion.

Yours is a world where disproof rules, and conspiracies are assumed true until proven false. I'm sure it's entertaining, but it's not "true" any more than mine is.

In my world, Oswald probably shot JFK and covid was probably a natural virus, because those are the hypotheses that demand the least of the existing evidence. I'm willing to change my priors with more evidence, but not because of the lack of disproof of an entertaining counter-hypothesis.