I would argue that even before the point where the conspiracies I mentioned were conclusively proven and accepted as common knowledge, it still made sense to seriously consider the possibility and not dismiss people doing so only because they were engaging in conspiracy theories (which absolutely happened). That mindset just helps them get away with it.
You can until they provide evidence. Because the onus of proof is on the claimant.
Acquire proof.
I would argue that even before the point where the conspiracies I mentioned were conclusively proven and accepted as common knowledge, it still made sense to seriously consider the possibility and not dismiss people doing so only because they were engaging in conspiracy theories (which absolutely happened). That mindset just helps them get away with it.