I just tend to hedge my bets with lots of disclaimers for things I’m not totally sure of. I know I’m not an expert on these matters, and I don’t want anyone taking what I say and spreading it has hard facts when I know there’s a real possibility that I may have it completely wrong. Hopefully no one can read my comment and go “well this guy sure seems to know what he’s talking about, I’m going to take his word for it and tell all of my friends,” but maybe it’ll get them to take a second look, see what info is out there and be mindful about where that information is coming from and try to draw their own conclusions.
And really, as far as having an opinion goes, this shouldn’t really be the kind of thing we’re dealing in opinions about. This should just be a matter of hard facts and numbers, but unfortunately due to industries like agriculture and oil sticking their fingers into, those hard facts are usually too hard for most of us to come by, so we’re kind of left with nothing but opinions based on what spotty facts we have.