I can't say I've heard those arguments - sounds like you're making a strawman to argue against.BTW there are two major spurious anti-ghost arguments.
(1) It does not exist because we don't have an
agreed scientific explanation for it.
People were correct to believe in the sun for thousand years,
even though they had no ideas as to how it shines.
(2) Assuming that ghosts do not exist as an axiom,
and that all reports are therefore delusional or falsified.
This is called deciding on the answer and then selecting
the evidence to fit that pre-decision.
My reason for not believing is lack of evidence.