I prefer the inverse. Reading the comments from an educated audience first, then diving into the article with a more firm understanding of the landscape.
I agree, commenting without reading the article and only reading the comments is a sure-shot way of making a mistake.
You're not just getting landscape, you're getting the messy human battlefield of human opinion (sometimes for better, often for worse).
Personally i wish there were a plugin that would prevent voting until you've opened the link and spent at least a minute on page :P
I don't want to reward linkbait and hype. A pdf link on the efficient implementation of the radon transform or compiler theory is much more likely to get an unfiltered click from me.