I agree with your sentiment that this can be a slippery slope, but I also think that you (and TFA) are glossing over an important point: there's a huge difference between distribution infrastructure and discovery infrastructure.
The internet was full of conspiracy theories, crackpots, and silliness, well before the facebooks, youtubes, and so forth. The key difference is that these were hard to find. Early on, the most effective discovery infrastructure was based on hand-curated indexes (e.g., [1,2]). These moved slowly and were hard to game. Now, those same indexes are generated by algorithms, the gaming of which has spawned an entire cottage industry.
The parent's viewpoint and TFA are not incompatible, as long as we don't assume that content distribution and content discovery have to come from the same service. The open internet survived for over 2 decades without bringing down democracy. At the same time, it would be a good idea to see a bit more editorial responsibility from services driving discovery. Better still, if hosting and discovery are decoupled, there's no network effects or content archive creating a captive audience if editorial power is abused.
Tying things back to TFA, and perhaps the point that you're trying to make here, amadeuspagel: IPFS seems mostly aimed at providing hosting infrastructure rather than discovery. I'll emphasize the point again: censorship-free hosting has been largely unproblematic for the past two decades. What's been getting us into trouble now is discovery without editorial review (and forcibly tying discovery to hosting).
[1] https://en.wikipedia.org/wiki/Yahoo!#Founding
[2] https://en.wikipedia.org/wiki/Whole_Internet_User%27s_Guide_...