I, for one, look forward to this future where we finally get over our weird obsession with truthfulness.

We need truth to survive though. Literally.

Within a community where it is equally devastating to the person who told the mistruth should you be harmed by it, sure, but the random blowhard on the internet who couldn't care less about you has no reason to think about you at all. Per the discussion taking place, crying that they didn't tell the truth is the stupidest thing imaginable.

Said blowhard moving to using generative AI to come up with even crazier nonsense makes no difference. There is no logical reason for you, outside of whatever entertainment value you can find, to be listening to him in the first place and, even if only deep down, you know that.

I look for more credible sources and find it all gamed for profit.

Sounds like you'll enjoy living in a Soviet environment. Which is the sort of thing you get when politics and governance is entirely built out of lies.

It's surely already happening now. Nietzsche worried about The Last Man, well, I think we've reached and passed The Last Dataset. Everything from here on out has some subset of once-digested AI slop, and each iteration will include more and more. Like an image that's bounced back and forth between two mirrors, we'll get further and further from ground truth. Maybe everything will tend towards the latent space equivalent of a grey blob.