It's absolutely true that we should consider the source for this and any other reviews / studies / news articles etc., and be aware of their likely position.

We should also recognize that, for all but the most mainstream possible questions or topics, most of the study is going to come from interest groups-- they're the ones who are interested enough to do the work to look at the data and publish their results!

If we dismiss reviews like this out-of-hand simply because they are created by an interest group, then we'll miss out on a lot of information and opportunity for reasonable discourse.

(Note that I'm not saying the parent comment is advocating this, but it did raise the point in my mind.)