As nearly as I can tell, this kind of bias afflicts most/all of the folks who frequent YC News. To understand why I think this, review my previous submissions and the non-response each received. It seems that (aspiring) entrepreneurs who are pure tech (I'm a hybrid of comp sci & comedy writing) just don't want to believe that, going forward, their companies will probably have to market profitably through branded entertainment to be competitive.
I agree with the idea that here in this Web Startup World Echo Chamber, we're all probably suffering from a big helping of confirmation bias... but your comment at the end about this being reflected by your submissions being ignored is a total non-sequitur. How does branded entertainment relate to news.yc? Lack of interest in the videos you recorded doesn't necessarily indicate that the audience here suffers from confirmation bias. Maybe the community just isn't interested in your submissions.