Regarding point 2, I thought that at first, but am now less certain. If fake stuff is everywhere, it's true. But if people then gravitate to reputable sources,

Regarding point 2, I thought that at first, but am now less certain. If fake stuff is everywhere, it's true. But if people then gravitate to reputable sources, there's less reason to make fake stuff, decreasing the amount of fake stuff until the incentive towards reputation is gone again. There's going to be an equilibrium in there somewhere, but that may be weirder and less predictable than either end of the spectrum.