First of all, too many readers say that "this is what they always do: buy reviews on blogs". Apart from the fact that they don't provide any kind of proof, most of the serious blogs don't get paid by companies for writing reviews.
Second: LG is indeed trying to buy coverage. Of course, John Biggs is being way too harsh (it's TC, what did you expect?) and this isn't the correct way to reply. But the PR company is not offering a device for testing, it's asking for a review/comparative in exchange for money.
And last of all, this article will make me doubt whenever I see a LG G2 review in a blog I don't know as much, so it was helpful for me.