Now that the entire population uses it, the average IQ involved has plummeted, and the political and social payoff for manipulating it with inauthentic content is huge.
You have made an important statement which while simple - most people don't really understand the full spectrum of implications. A substantial proportions of the people are really are ungovernable - online or otherwise, they simply stoop too low. Like they say: you cannot fix stupid.
You are so full of yourself. HN is great proof that there is zero association between "self identifies as technical" and "intelligence"
First off, the early internet barrier wasn't "self identification", it was a minimum degree of intelligence and technical ability.
And even so, they're right to say that the payoff for manipulation has become huge. The incentives at play today are totally different than they were, and very often of the lowest common denominator or tragedy of the commons variety.