No it's not a good thing and you won't ever change someone's mind on their belief in a conspiracy theory, from a one off conversation. people like that have no

No it's not a good thing and you won't ever change someone's mind on their belief in a conspiracy theory, from a one off conversation. people like that have no logical basis for their belief, you can't reason with them using better logic. All you'll end up doing is wasting your time and likely pissing multiple people off. Including yourself. Not worth it.