I'm not convinced that previous systems of more centralized distribution of information (television networks and woodblock printing) were better than the ones that succeeded it.
I'd dispute that, after making one clarification to my original comment: I meant "unprecedented relative effectiveness." At no other time has any rando with a batshit insane idea been able to spread it with near equal access to same the tools people use to spread real knowledge and understanding. To contrast it with the previous system, it's like hiring a bunch of incompetents and then getting rid of code review.