That's democracy at work on the interweb. In the past print era only the elite — GHT, Duplex and the like– got to tell us how to do it. Now every man and his dog can. More like mob rule than democracy really.
Some dodgy workshop practices among the good stuff that is on Youtube too. One memorable video about lathe chuck maintenance and lubrication shows you how to split your 3-jaw chuck apart by inserting the chuck key into its square hole, then hammering on it with a 10-inch shifting spanner. Then prying it the rest of teh way with a screwdriver. Ouch. No mention of the three clearly visible threaded jacking holes in the back of the chuck provided specifically to ease the back off the chuck.
Yes, i did leave a comment on that one. Response was that his proper hammer was outside in his truck so he had no choice! Someone else suggested the use of a deadblow hammer.
Everyone's an expert on the interweb. That's why I think there is still a good future for niche market print publishing like MEW etc. At least what you read there has been through some sort of peer review process, ie knowledgeable editor, commitment to WHS, subsequent letters to the editor from the ever-alert pedants and so forth.
If you want to see something really scary, search youtube for "welding a gas tank" as it's called on that side of the pond. You can't convince these people that getting away with suicidal behaviour once, or even ten times, does not mean it will not go boom the next time you try it. I guess Youtube is big enough to deal with the lawsuits?