It pops out of the Explore-Exploit Tradeoff. So we end up with separate spaces like academia, labs, studios etc. See how the story ends for Socrates, Plato, Aristotle, Galileo etc. Tale as old as time.
I was never big about reddit anyway but now I will definitely never interact with that site again.
But, the latter two points aren't really about Reddit or training data at all. They're about model alignment and social epistemology. Much broader issues. It just feels disjointed.