The reason I don't watch YouTube videos is that I watch a lot of DVDs. I'm sure there are great things on YouTube, and it has occasionally been the only way to track down something I really cared about. (When Maurice Sendak died, I reviewed Really Rosie by watching it on YouTube, because it wasn't available anywhere else accessible.) However, I own hundreds of DVDs. I get probably an average of ten items on DVD a week from the library, which includes seasons of TV shows. I have a Netflix subscription. I'm getting along just fine for content without adding YouTube onto that.
As for why I don't watch hoax videos, well, they aren't that interesting to me for the most part. I think the information can almost always be conveyed better in text. I'm only really interested in the dialogue; the comments section of a YouTube page isn't dialogue, and I have considerably better things to do with my time than make videos in response, even if, again, I thought videos were a decent way of having the discussion. Which I don't. Are the HB videos funny? Possibly. However, so are some of the things I have on hold from the library, and they aren't funny in a painful way.
Seven minutes, Andromeda? I would imagine the rate of false diagnosis from that is huge. And missed diagnosis. I'm actually horrified to discover that; even my low-cost, constantly overbooked clinic doesn't do intake in less than an hour, and a lot of their patients have something as relatively simple as addiction or an abusive relationship, not even a full-blown mental illness. The doctors also get a lot of documentation, such as histories of hospitalization and so forth, that can also make a lot of difference.
But if someone's schizophrenic, the way to deal with their delusions is not to. You can't talk my best friend's aunt out of her fears about the Klan (despite the fact that the Klan is made up of people who look like her, not attacking people like her), because she's schizophrenic. The only thing that will help is mental health care, which we are none of us qualified to provide and certainly not able to properly provide online. And since all we interact with is the delusion, then is the right answer to just ignore them? Or is it better to assume that they're mentally healthy sans this particular glitch and continue to engage? Or can we even assume that the glitch is not a mental defect and try to engage as equals? I prefer that last, because any other assumption is unwarranted, unjustified, and unjust. And, again, if it's a mental illness, there is literally no point in engaging, because you're not going to convince the person--and you stand a decent chance of looking like a bully.