This is all the result of confusing 1st amendment rights with the right to access the audience that gathers at a particular URL. What Taibbi is asking for is that the guy who tells you that drinking rat poison is good for you should be allowed an audience and that even putting a warning alongside the video would be an infringement on his rights. Looking at the comments here I have to conclude that HN is no longer on…
Yes, it's not directly an issue of the first amendment, but it's still a topic with discussing since sites like YouTube, Twitter, and Facebook constitute a lot of where discourse takes place these days.