Firstly, the videos were poorly edited; the background music is obnoxious (sounds like latin salsa or something) and drowns out/makes it difficult to hear speech/conversations.
There is little in the way of any building/fabrication and just spouts out a bunch of useless, redundant information that most viewers probably already know.
As a mechanic, fabricator, etc. myself; I found it all pretty "amateurish" and boring