There is nothing as the perfect product, its man made so has flaws of some point.
When a reviewers keeps going this is the best thing since sliced bread, product after product price point to price point, then well it for sure isn’t it is a review its an ad.
Like Joe Cyclops said he doesn’t do unboxing videos, and well I don’t watch them. Also, I agree with @thelbc that some reviews are just consumers justifying their purchases.
Also, there is a play around review, surface and in-depth reviews. In-depth to me are not a 5 minute show, they take time and need detail, the best at this is Steve at AEAC, IMHO but he is paid, so there is always a level of salt on his comments about the product.