Said before and will say again that I view You Tube as an entertainment medium only. Just because some yahoo posts a YT Video of something, don't make it the 'Holy Grail' of how to do something.
There are a passel of YT video's out there in cyberland that are 100% bogus and based on someone's personal opinion of something that is completely wrong.
Just like product reviews. Just because someone gives a product a 5 star rating, don't mean that product is any good. In fact, it can be pure junk.
I heavily discount product reviews and far as YT, for me it's entertainment and not much more.
There are some informative YT video's out there that are spot on but for the good ones, there are 5 times as many bogus ones.