From what I have seen, the "solution" to moderation troubles in decentralized solutions has mostly always been... more centralization.
People always had irrational populist and conspiratorial beliefs, but that was mediated by popular media generally not platforming kooks. Now you have the top 10 podcasts allowing people to mainline validation for conspiracies.
I don't see how centralization helps. Allowing (or demanding) that a media provider to regulate more could lead to less platforming for conspiracy theorists and populists.