I think the difficulty that most of us see In you tube js that for every legitimate expert on there there's at least 20 morons who think they know something but are completely wrong... it frustrates me at times that beginners (who in fairness probably don't know enough to sort out the wheat from the chaf) blindly follow some of these, often well made but misleading, videos with disastrous results. We see them on here from time to time and I wince when I hear 'I saw it in you tube'. Its fine if you have the knowledge to ignore the dross but there's a lot of self publicised 'experts' that frankly should not be putting themselves forward with advice that is just based solely on some wacky personal experience without qualifying that is what it is
It's not something confined to beekeeping either . I'm a wood turner and a little while ago, whilst researching for a project, I came across a video where the so called 'professional turner' ( who actually sold woodturning courses) was demonstrating using a tool in a way that it was not only not intended for but what he was doing could have ended with the tool embedded in his forehead ! He has loads of followers and supportive comments - total unbeciile in my opinion.
.
You tube videos should all carry a health warning .