It sounds like you're saying we all have a fundamental awareness of which assertions are true vs. false, and acceptance of the true ones is basically a matter of character / psychology.
That might be true for some persons and assertions, but I don't think it's true in all cases.
People mostly rely on social proof and what other people believe around them. This isn't a character flaw, it's just the reality of not being able to know everything.
That might be true for some persons and assertions, but I don't think it's true in all cases.