Going meta (note the lack of capitalization and insert your own joke here) I would say that the stress of running comments on your own blog, in any form, costs more most of the time as compared to sending the comments to places like HN, Reddit, and the like. I can see where size of concern means that you engage and host comments on your own site. However, it also seems to be that running a comment space in service of sharing something made and/or selling a product is the equivalent of painting a wall a nice, pristine white in a highly visible and accessible place and then getting mad at that same wall getting tagged with graffiti.

In other words, I am sorry that the Ron Glibert got burned, and I sympathize, but it seems to me that YouTube (where the video is hosted) runs a perfectly serviceable comments site that you can turn on and off. No need to run your own (unless you want to).