Yea, the issue is fewer and fewer people care about objective fact anymore. Reality is whatever you feel it is, or whatever you feel you want it to be, and the internet (the current iteration of it) is perfectly content to feed you that reality, and fake/real is becoming increasingly difficult to distinguish.

I've also been in similar discussions and have since given up - even if you show incontrovertible evidence to the contrary, the response is often "well, this is what I believe." I'm not even talking about topics where there is some existing debate - like, things that cannot possibly be disputed, like that the earth is round (not hyperbole).