If you actually care to inform, then you can add a source to give the information some third party background and more details.
Expecting others to put in the work to authenticate your claims, by sending them on wild goose chases on Google that might or might nor yield the same results you got, is a recipe for getting overwhelming amounts of disinformation.
As it's way easier to casually claim an unsourced falsehood, than it is to research a topic and debunk that falsehood with credible sources.
It's this way of thinking that has made requesting a source the new "Nuh-uh."
A better response is, "I see it different, here's a source I'm providing or story of personal experience that suggests why. Do you have other context or information that could help me understand your position?"
Expecting others to put in the work to authenticate your claims, by sending them on wild goose chases on Google that might or might nor yield the same results you got, is a recipe for getting overwhelming amounts of disinformation.
As it's way easier to casually claim an unsourced falsehood, than it is to research a topic and debunk that falsehood with credible sources.