Mr Pete did not steal his name. In one of his videos he talks about where he gets the nickname. Tubalcain is mentioned in the bible in Genesis 4:22 as a "forger of all things iron or bronze". In effect, the oldest iron monger known.
I can't remember if he addresses the other Tubalcain (T. D. Walshaw) in his video, or if it was posted in the comments but I am pretty sure he distinguishes himself from the other gentlemen.
I agree that he is a great teacher. I would not agree that he doesn't know ****. You must put this into perspective, he taught High school shop, where he was lucky enough to get "the kids" (as he always refers to them as) attention for 2 seconds to teach them something. As a beginner myself I find his videos invaluable to inspiring me to jump right in and try this stuff out. He may have to gloss over certain inaccuracies to hold peoples attention.
I also agree, his voice is eerily soothing. He could have gone into radio broadcasting.