Nowadays, I just smile and give it a shrug whenever these convos happen IRL. I have accepted the reality that there's no way to remove someone who's trapped in an echo chamber built for them by their chosen media or their epistemic relativism.

They are the same people who have been digging facts based solely on their confirmation biases. The same people who are gullible and just wanted someone to agree with them regardless of whether the subject is true or not.

Based on my experience, only self-realization can get them out of that state, "so don't engage anymore" (at least that's what I tell myself in those instances)!