RV magazine coach reviews

The reviews on different RV magazines seem to boast about each coach reviewed. Are the authors partial because they are being paid to write the review?
Re: RV magazine coach reviews

I think people (subscribers) only want to hear the good news.

The magazine is probably not willing to publish bad reviews. They would rather fill that space with a good review.

That isn't the same as saying that "the authors (are) partial" to one RV or another. You just don't get to read the bad news.