I can't stand knife reviewers who don't use a tripod. Some are so bad that I have to shut them off before I get seasick. It didn't work for the Blair Witch Project and it is even worse on a review where I'm actually trying to observe the jimping/choil/whatever that is being described.
Also, if you drop an f-bomb in the first sentence of the review I usually stop the video right there. The reviewer clearly lacks the detailed articulation I was looking for.
And why do people even show unboxing? Unless it is particularly interesting then skip it; I've received mail before and I know how to open a box. The "first impression" videos where I get to hear someone say "wow, this feels lighter than I expected" are worthless, and I would much rather hear experienced opinions observed through extensive use. Nutnfancy is long-winded, but at least he holds back on his opinions until he's had time to evaluate a product.