I used to have a very similar opinion to yours until I found out the truth rarely fights for itself if there's an alternative, much more convenient lie — preferably one that plays into peoples' confirmation bias or makes someone richer.
We've got an aysmmetry here that never existed before in human history. Any kind of large scale public addressing: newspapers, TV, books, had some kind of controlling mechanism and instances who stood in for the quality with their reputation: Editors, printers, TV stations.
All legislation, including the First Amendment (which, just picking nits here, is probably too simple to slap onto YouTube as a global content platform as a US-only law) was written regarding these conventions.
YouTube goes out there and hands everyone a big fat mike who wants to be heard, and then amplifies this voice to believers via recommendations.
I used to think the Internet would be a net benefit to the world. After witnessing Cambridge Analytica, the "Internet Research Agency", large scale online harrassment and Anti-Vaxxers, I'm not so sure anymore.
I don't claim to know what the answer is.
I just claim I'm pretty sure it's not the unbounded freedom to anonymous and partly highly maliciously motivated actors to spread their message without oversight.