[gknoy]

Having an explanation of why helps our bullshit detector, and lets us re-evaluate claims if the explanation's basis falters later. If someone says, "X is bad for you because of Y", that may sound plausible. If they say that "Study Z shows that X causes Y, so don't do X", it's VERY much more plausible.

More importantly, if study Z turns out to be a hoax, we can look at the claims that used that as their basis and re-evaluate them.

You make a pretty good point about ways to make the blog posts more useful, though.